1. Home
    1. Start Here: Study Guide
    2. Community Standards And Posting Policies
    3. Terms of Use
    4. Moderator Team
    5. Website Overview
    6. Site Map
    7. Quizzes
    8. Articles
      1. Featured Articles
    9. All Blog Posts
      1. Elli's Blog / Articles
  2. Wiki
    1. Wiki Home
    2. FAQ
    3. Classical Epicureanism
    4. Files
    5. Search Assistance
    6. Not NeoEpicurean
    7. Foundations
    8. Navigation Outlines
    9. Reading List
    10. Key Pages
  3. Forum
    1. Full Forum List
    2. Welcome Threads
    3. Physics
    4. Canonics
    5. Ethics
    6. Forum Shortcuts
    7. Forum Navigation Map
    8. Featured
    9. Most Discussed
  4. Latest
    1. New Activity
    2. Latest Threads
    3. Dashboard
    4. Search By Tag
    5. Complete Tag List
  5. Podcast
    1. Lucretius Today Podcast
    2. Episode Guide
    3. Lucretius Today At Youtube
    4. EpicureanFriends Youtube Page
  6. Texts
    1. Overview
    2. Diogenes Laertius
    3. Principal Doctrines
    4. Vatican Collection
    5. Lucretius
    6. Herodotus
    7. Pythocles
    8. Menoeceus
    9. Fragments - Usener Collection
    10. Torquatus On Ethics
    11. Velleius On Gods
    12. Greek/Latin Help
  7. Gallery
    1. Featured images
    2. Albums
    3. Latest Images
    4. Latest Comments
  8. More
    1. Featured Content
    2. Calendar
      1. Upcoming Events List
      2. Zooms - General Info
      3. Fourth Sunday Meet-&-Greet
      4. Sunday Weekly Zoom
      5. Wednesday Zoom Meeting
    3. Logbook
    4. EF ToDo List
    5. Link-Database
  • Login
  • Register
  • Search
This Forum
  • Everywhere
  • This Forum
  • Forum
  • Articles
  • Blog Articles
  • Files
  • Gallery
  • Events
  • Pages
  • Wiki
  • Help
  • FAQ
  • More Options

Welcome To EpicureanFriends.com!

"If anyone thinks that he knows nothing, he cannot be sure that he knows this, when he confesses that he knows nothing at all. I shall avoid disputing with such a trifler, who perverts all things, and like a tumbler with his head prone to the earth, can go no otherwise than backwards." (Lucretius 4:469)

Sign In Now
or
Register a new account
  1. Home
    1. Start Here: Study Guide
    2. Community Standards And Posting Policies
    3. Terms of Use
    4. Moderator Team
    5. Website Overview
    6. Site Map
    7. Quizzes
    8. Articles
      1. Featured Articles
    9. All Blog Posts
      1. Elli's Blog / Articles
  2. Wiki
    1. Wiki Home
    2. FAQ
    3. Classical Epicureanism
    4. Files
    5. Search Assistance
    6. Not NeoEpicurean
    7. Foundations
    8. Navigation Outlines
    9. Reading List
    10. Key Pages
  3. Forum
    1. Full Forum List
    2. Welcome Threads
    3. Physics
    4. Canonics
    5. Ethics
    6. Forum Shortcuts
    7. Forum Navigation Map
    8. Featured
    9. Most Discussed
  4. Latest
    1. New Activity
    2. Latest Threads
    3. Dashboard
    4. Search By Tag
    5. Complete Tag List
  5. Podcast
    1. Lucretius Today Podcast
    2. Episode Guide
    3. Lucretius Today At Youtube
    4. EpicureanFriends Youtube Page
  6. Texts
    1. Overview
    2. Diogenes Laertius
    3. Principal Doctrines
    4. Vatican Collection
    5. Lucretius
    6. Herodotus
    7. Pythocles
    8. Menoeceus
    9. Fragments - Usener Collection
    10. Torquatus On Ethics
    11. Velleius On Gods
    12. Greek/Latin Help
  7. Gallery
    1. Featured images
    2. Albums
    3. Latest Images
    4. Latest Comments
  8. More
    1. Featured Content
    2. Calendar
      1. Upcoming Events List
      2. Zooms - General Info
      3. Fourth Sunday Meet-&-Greet
      4. Sunday Weekly Zoom
      5. Wednesday Zoom Meeting
    3. Logbook
    4. EF ToDo List
    5. Link-Database
  1. Home
    1. Start Here: Study Guide
    2. Community Standards And Posting Policies
    3. Terms of Use
    4. Moderator Team
    5. Website Overview
    6. Site Map
    7. Quizzes
    8. Articles
      1. Featured Articles
    9. All Blog Posts
      1. Elli's Blog / Articles
  2. Wiki
    1. Wiki Home
    2. FAQ
    3. Classical Epicureanism
    4. Files
    5. Search Assistance
    6. Not NeoEpicurean
    7. Foundations
    8. Navigation Outlines
    9. Reading List
    10. Key Pages
  3. Forum
    1. Full Forum List
    2. Welcome Threads
    3. Physics
    4. Canonics
    5. Ethics
    6. Forum Shortcuts
    7. Forum Navigation Map
    8. Featured
    9. Most Discussed
  4. Latest
    1. New Activity
    2. Latest Threads
    3. Dashboard
    4. Search By Tag
    5. Complete Tag List
  5. Podcast
    1. Lucretius Today Podcast
    2. Episode Guide
    3. Lucretius Today At Youtube
    4. EpicureanFriends Youtube Page
  6. Texts
    1. Overview
    2. Diogenes Laertius
    3. Principal Doctrines
    4. Vatican Collection
    5. Lucretius
    6. Herodotus
    7. Pythocles
    8. Menoeceus
    9. Fragments - Usener Collection
    10. Torquatus On Ethics
    11. Velleius On Gods
    12. Greek/Latin Help
  7. Gallery
    1. Featured images
    2. Albums
    3. Latest Images
    4. Latest Comments
  8. More
    1. Featured Content
    2. Calendar
      1. Upcoming Events List
      2. Zooms - General Info
      3. Fourth Sunday Meet-&-Greet
      4. Sunday Weekly Zoom
      5. Wednesday Zoom Meeting
    3. Logbook
    4. EF ToDo List
    5. Link-Database
  1. EpicureanFriends - Classical Epicurean Philosophy
  2. Forum
  3. Physics - The Nature Of The Universe
  • Sidebar
  • Sidebar

Physics - General Discussion

Epicurus' views of the nature of the universe are the foundation of every aspect of his philosophy. While many particulars have changed, Epicurus' overall assessment of the non-supernatural nature of the universe remains fully valid today.

LATEST LUCRETIUS TODAY PODCAST: Episode 326 - "Who Cares About Infinite Divisibility? And Why?"   | Website Overview | Forum Navigation Map     | Latest Blog Post: Not a Bunker But A Camp - Epicurean Engagement With Society   

New Graphics: Are You On Team Epicurus? | Comparison Chart: Epicurus vs. Other Philosophies | Chart Of Key Epicurean Quotations 

Welcome to the EpicureanFriends Forums! -- Please be sure that all posts conform to our policies for posting as linked at our Terms of Use page. -----Scroll down to navigate through the forum. ----- You can also: Search by Forum Tags / Search by Forum Shortcuts / Read Featured Threads / Return to Main Forum Board. Not sure where to post? Read our guidance on where to post. To see reference material (and more) visit our Website Navigation Page.

List Of Frequently Used Forums
  1. Ancient Epicurean Texts (300 BC to 300 AD)
  2. The Lucretius Today Podcast and other Projects
  3. Study Resources and Activism
  4. Physics - The Nature of the Universe
  5. Canonics - The Tests of Truth: The Five Senses, Anticipations, and Feelings of Pleasure and Pain
  6. Ethics - How to Live As An Epicurean
  7. Uncategorized Section
  8. Epicurean Books, Articles, and Videos (1500's - Present)
  9. Epicurean Historical Figures - Biographies of Epicureans from Epicurus To The Present
  10. Comparisons With Non-Epicurean Philosophies
  11. History, Locations, and Customs Relevant to Ancient Epicureans
  12. Epicurean Symbolism in Art, Music, Literature, and Poetry
  13. Level 03 And Above Discussions
  14. EpicureanFriends Zoom Meetings
  • RSS Feed
      • Views
        • Title
        • Author
        • Date
        • Replies
        • Reactions
        • Views
        • Last Reply
    1. References to Epicurus' Attitude Toward The "Place of the Sciences And Liberal Arts" 63

      • Cassius
      • May 15, 2020 at 9:37 AM
      • Cassius
      • July 28, 2020 at 10:18 AM
    2. Replies
      63
      Views
      36k
      63
    3. Cassius

      July 28, 2020 at 10:18 AM
    1. Use Of The Term "Metaphysics" In Discussing Epicurus 8

      • Like 2
      • Cassius
      • March 30, 2026 at 7:37 PM
      • Cassius
      • March 31, 2026 at 8:22 AM
    2. Replies
      8
      Views
      254
      8
    3. Julia

      March 31, 2026 at 8:22 AM
    1. Magnetism

      • Like 1
      • Cassius
      • October 15, 2025 at 10:31 AM
      • Cassius
      • October 15, 2025 at 10:31 AM
    2. Replies
      0
      Views
      536
    1. Science Toys That Illustrate Unseen Forces

      • Cassius
      • October 15, 2025 at 10:43 AM
      • Cassius
      • October 15, 2025 at 10:43 AM
    2. Replies
      0
      Views
      538
    1. Epicurus Was Not an Atomist (...sort of) 3

      • Like 2
      • Eikadistes
      • December 22, 2025 at 2:24 PM
      • Eikadistes
      • March 26, 2026 at 11:17 AM
    2. Replies
      3
      Views
      915
      3
    3. Cassius

      March 26, 2026 at 11:17 AM
    1. Epicurean Physics and Canonics at Three Levels of Reality 4

      • Like 1
      • Joshua
      • December 3, 2025 at 2:02 PM
      • Joshua
      • December 3, 2025 at 6:07 PM
    2. Replies
      4
      Views
      1k
      4
    3. TauPhi

      December 3, 2025 at 6:07 PM
    1. The Logical Possibilities As To What Can Be Eternal (Applicable to Gods As Well)

      • Cassius
      • December 30, 2024 at 10:26 AM
      • Cassius
      • December 30, 2024 at 10:26 AM
    2. Replies
      0
      Views
      1.1k
    1. On The Importance of Understanding The Nature of Things And Canonics To Ethics (A Post By Elli At Facebook) 1

      • Love 2
      • Cassius
      • October 26, 2025 at 8:56 AM
      • Cassius
      • October 27, 2025 at 4:46 PM
    2. Replies
      1
      Views
      1.1k
      1
    3. Patrikios

      October 27, 2025 at 4:46 PM
    1. Our Journey Through The Universe ... Our Journey From Atoms to Consciousness. / New Video And Artwork 1

      • Like 7
      • Raphael Raul
      • December 31, 2025 at 10:49 PM
      • Raphael Raul
      • January 1, 2026 at 4:50 PM
    2. Replies
      1
      Views
      1.2k
      1
    3. Raphael Raul

      January 1, 2026 at 4:50 PM
    1. Book Note From Facebook Epicurean Group: "Quantum Bullshit - How To Ruin Your Life With Advice From Quantum Physics"

      • Like 3
      • Cassius
      • September 28, 2025 at 9:12 AM
      • Cassius
      • September 28, 2025 at 9:12 AM
    2. Replies
      0
      Views
      1.3k
    1. Intermundia Anyone? Article: "Does Life Really Need Planets? Maybe Not!"

      • Love 2
      • Cassius
      • December 11, 2024 at 3:53 PM
      • Cassius
      • December 11, 2024 at 3:53 PM
    2. Replies
      0
      Views
      1.3k
    1. Explaining Epicurean Physics In One Paragraph (in rebuttal of ideas such as the "multiverse")

      • Kalosyni
      • September 22, 2023 at 4:01 PM
      • Kalosyni
      • September 22, 2023 at 4:01 PM
    2. Replies
      0
      Views
      1.6k
    1. An Analogy That Should Live Forever In Infamy Along With His Ridiculous "Cave" Analogy - Socrates' "Second Sailing" 9

      • Cassius
      • February 19, 2026 at 1:52 PM
      • Cassius
      • March 6, 2026 at 8:59 AM
    2. Replies
      9
      Views
      1.6k
      9
    3. Kalosyni

      March 6, 2026 at 8:59 AM
    1. Ancient Epicurean worldview (classes of compounds of atoms) 1

      • Thanks 1
      • TauPhi
      • September 2, 2024 at 2:44 PM
      • TauPhi
      • September 2, 2024 at 5:49 PM
    2. Replies
      1
      Views
      1.6k
      1
    3. Cassius

      September 2, 2024 at 5:49 PM
    1. How the Epicureans might have predicted Lorentz time dilation 12

      • Like 3
      • jcblackmon
      • December 15, 2025 at 10:05 AM
      • jcblackmon
      • February 4, 2026 at 11:21 AM
    2. Replies
      12
      Views
      1.7k
      12
    3. Martin

      February 4, 2026 at 11:21 AM
    1. Best Videos Discussing The Limits of Speculation In Physics

      • Cassius
      • July 29, 2021 at 8:58 AM
      • Cassius
      • July 29, 2021 at 8:58 AM
    2. Replies
      0
      Views
      1.8k
    1. Beginning of the Universe

      • Love 1
      • Mousikos
      • June 17, 2019 at 6:21 AM
      • Mousikos
      • June 17, 2019 at 6:21 AM
    2. Replies
      0
      Views
      1.8k
    1. Article Attacking "Post Empirical Science"

      • Love 1
      • Cassius
      • October 24, 2019 at 11:19 AM
      • Cassius
      • October 24, 2019 at 11:19 AM
    2. Replies
      0
      Views
      1.8k
    1. History of the Universe podcast

      • Thanks 3
      • Don
      • June 19, 2024 at 7:13 AM
      • Don
      • June 19, 2024 at 7:13 AM
    2. Replies
      0
      Views
      1.9k
    1. Article - "Quantum Theory Describes An Eternal Universe"

      • Cassius
      • June 20, 2019 at 7:49 AM
      • Cassius
      • June 20, 2019 at 7:49 AM
    2. Replies
      0
      Views
      2k
    1. Astronomy Software - For Moon Phases and General Night-Sky Navigation 4

      • Thanks 2
      • Godfrey
      • January 24, 2023 at 2:15 PM
      • Godfrey
      • October 10, 2024 at 7:42 PM
    2. Replies
      4
      Views
      2.4k
      4
    3. Cassius

      October 10, 2024 at 7:42 PM
    1. Epicurus On Causation 2

      • Cassius
      • May 18, 2024 at 11:13 AM
      • Cassius
      • May 26, 2024 at 4:54 PM
    2. Replies
      2
      Views
      2.5k
      2
    3. Pacatus

      May 26, 2024 at 4:54 PM
    1. *Basic* Article on History of Atomism - 2023 2

      • Cassius
      • January 25, 2023 at 9:23 AM
      • Cassius
      • January 25, 2023 at 9:45 AM
    2. Replies
      2
      Views
      2.5k
      2
    3. Cassius

      January 25, 2023 at 9:45 AM
    1. Free Will, Determinism or. Compatibilism? 2

      • Like 3
      • Sid
      • October 10, 2022 at 4:29 AM
      • Sid
      • October 10, 2022 at 8:13 AM
    2. Replies
      2
      Views
      2.7k
      2
    3. Cassius

      October 10, 2022 at 8:13 AM
    1. Using the Phrase "Nothing Exists Except Atoms and Void"

      • Cassius
      • March 12, 2017 at 10:21 AM
      • Cassius
      • March 12, 2017 at 10:21 AM
    2. Replies
      0
      Views
      2.8k
    1. The meaning of the word "Nature" 1

      • Cassius
      • June 1, 2018 at 9:22 AM
      • Cassius
      • June 1, 2018 at 4:10 PM
    2. Replies
      1
      Views
      2.8k
      1
    3. Hiram

      June 1, 2018 at 4:10 PM
    1. A quote from a book review person needs clarification misunderstanding 1

      • godek
      • July 19, 2019 at 1:16 AM
      • godek
      • July 19, 2019 at 5:38 AM
    2. Replies
      1
      Views
      2.8k
      1
    3. Cassius

      July 19, 2019 at 5:38 AM
    1. Use and Misuse of "Images" and "Fantastic Impressions"

      • Cassius
      • March 14, 2017 at 5:13 PM
      • Cassius
      • March 14, 2017 at 5:13 PM
    2. Replies
      0
      Views
      2.9k
    1. Implications of "The Swerve" (Lucretius) and of Primary and Secondary Attributes (In both the Letter to Herodotus and in Lucretius) 2

      • Cassius
      • September 6, 2018 at 4:07 PM
      • Cassius
      • September 9, 2018 at 7:10 PM
    2. Replies
      2
      Views
      2.9k
      2
    3. Cassius

      September 9, 2018 at 7:10 PM
    1. Navigation of the Physics Forum

      • Cassius
      • July 29, 2021 at 8:52 AM
      • Cassius
      • July 29, 2021 at 8:52 AM
    2. Replies
      0
      Views
      3.1k

Display Options

Finding Things At EpicureanFriends.com

Here is a list of suggested search strategies:

  • Website Overview page - clickable links arrranged by cards.
  • Forum Main Page - list of forums and subforums arranged by topic. Threads are posted according to relevant topics. The "Uncategorized subforum" contains threads which do not fall into any existing topic (also contains older "unfiled" threads which will soon be moved).
  • Search Tool - icon is located on the top right of every page. Note that the search box asks you what section of the forum you'd like to search. If you don't know, select "Everywhere."
  • Search By Key Tags - curated to show frequently-searched topics.
  • Full Tag List - an alphabetical list of all tags.

Resources

  1. Getting Started At EpicureanFriends
  2. Community Standards And Posting Policies
  3. The Major Doctrines of Classical Epicurean Philosophy
  4. Introductory Videos
  5. Wiki
  6. Lucretius Today Podcast
    1. Podcast Episode Guide
  7. Key Epicurean Texts
    1. Chart Of Key Quotes
    2. Outline Of Key Quotes
    3. Side-By-Side Diogenes Laertius X (Bio And All Key Writings of Epicurus)
    4. Side-By-Side Lucretius - On The Nature Of Things
    5. Side-By-Side Torquatus On Ethics
    6. Side-By-Side Velleius on Divinity
    7. Lucretius Topical Outline
    8. Usener Fragment Collection
  8. Frequently Asked Questions
    1. FAQ Discussions
  9. Full List of Forums
    1. Physics Discussions
    2. Canonics Discussions
    3. Ethics Discussions
    4. All Recent Forum Activities
  10. Image Gallery
  11. Featured Articles
  12. Featured Blog Posts
  13. Quiz Section
  14. Activities Calendar
  15. Special Resource Pages
  16. File Database
  17. Site Map
    1. Home

Frequently Used Forums

  • Frequently Asked / Introductory Questions
  • News And Announcements
  • Lucretius Today Podcast
  • Physics (The Nature of the Universe)
  • Canonics (The Tests Of Truth)
  • Ethics (How To Live)
  • Against Determinism
  • Against Skepticism
  • The "Meaning of Life" Question
  • Uncategorized Discussion
  • Comparisons With Other Philosophies
  • Historical Figures
  • Ancient Texts
  • Decline of The Ancient Epicurean Age
  • Unsolved Questions of Epicurean History
  • Welcome New Participants
  • Events - Activism - Outreach
  • Full Forum List

Latest Posts

  • Revisiting Issues of The Use of AI in Epicurean Philosophy

    Don April 1, 2026 at 9:09 AM
  • Good and Bad Desire and Doubt In Epicurean Philosophy

    Cassius April 1, 2026 at 8:44 AM
  • Discussion of Blog Article - "Reality Does Not Require Being Eternally The Same"

    Cassius April 1, 2026 at 8:24 AM
  • Happy Birthday General Thread

    Cassius April 1, 2026 at 4:05 AM
  • Use Of The Term "Metaphysics" In Discussing Epicurus

    Julia March 31, 2026 at 8:22 AM
  • Welcome Page259!

    Eikadistes March 29, 2026 at 10:12 PM
  • Connecting Thought With Atoms - Emergence, Downward Causation (From The Macroscopic To The Atomic), and Epicurus

    Cassius March 29, 2026 at 4:27 PM
  • Sunday March 29, 2026 - Zoom Meeting - Lucretius Book Review - This Week: A Quick Look At Sedley's "Epicurean Anti-Reductionism"

    Cassius March 29, 2026 at 12:19 PM
  • Episode 327 - EATAQ 09 - Cashing In On Dividing Nature Into Active And Passive Components - The False Assertion of Intelligent Design

    Cassius March 28, 2026 at 10:29 AM
  • New "TWENTIERS" Website

    Don March 28, 2026 at 7:01 AM

Frequently Used Tags

In addition to posting in the appropriate forums, participants are encouraged to reference the following tags in their posts:

  • #Physics
    • #Atomism
    • #Gods
    • #Images
    • #Infinity
    • #Eternity
    • #Life
    • #Death
  • #Canonics
    • #Knowledge
    • #Scepticism
  • #Ethics

    • #Pleasure
    • #Pain
    • #Engagement
    • #EpicureanLiving
    • #Happiness
    • #Virtue
      • #Wisdom
      • #Temperance
      • #Courage
      • #Justice
      • #Honesty
      • #Faith (Confidence)
      • #Suavity
      • #Consideration
      • #Hope
      • #Gratitude
      • #Friendship



Click Here To Search All Tags

To Suggest Additions To This List Click Here

Newest Members

  • QuietCompanion

    March 29, 2026 at 10:16 AM
  • Tpamike

    March 25, 2026 at 10:40 PM
  • j.tycherne

    March 25, 2026 at 5:54 PM
  • timotheus

    March 22, 2026 at 9:54 AM
  • m.dango

    March 21, 2026 at 11:19 AM

Statistics

  • 56 Threads
  • 540 Posts (0.16 Posts per Day)

EpicureanFriends - Classical Epicurean Philosophy

  1. Home
    1. About Us
    2. Classical Epicurean Philosophy
  2. Wiki
    1. Getting Started
  3. Frequently Asked Questions
    1. Site Map
  4. Forum
    1. Latest Threads
    2. Featured Threads
    3. Unread Posts
  5. Texts
    1. Core Texts
    2. Biography of Epicurus
    3. Lucretius
  6. Articles
    1. Latest Articles
  7. Gallery
    1. Featured Images
  8. Calendar
    1. This Month At EpicureanFriends
Powered by WoltLab Suite™ 6.0.24
Style: Inspire by cls-design
Stylename
Inspire
Manufacturer
cls-design
Licence
Commercial styles
Help
Supportforum
Visit cls-design