Just in case someone reading this thread is not thoroughly familiar with these passages that are critical to this conversation:
First Epicurus quoted by Plutarch:
QuoteU423
Plutarch, That Epicurus actually makes a pleasant life impossible, 7, p. 1091A: Not only is the basis that they assume for the pleasurable life untrustworthy and insecure, it is quite trivial and paltry as well, inasmuch as their “thing delighted” – their good – is an escape from ills, and they say that they can conceive of no other, and indeed that our nature has no place at all in which to put its good except the place left when its evil is expelled. … Epicurus too makes a similar statement to the effect that the good is a thing that arises out of your very escape from evil and from your memory and reflection and gratitude that this has happened to you. His words are these: “That which produces a jubilation unsurpassed is the nature of good, if you apply your mind rightly and then stand firm and do not stroll about {a jibe at the Peripatetics}, prating meaninglessly about the good.”Ibid., 8, p. 1091E: Thus Epicurus, and Metrodorus too, suppose {that the middle is the summit and the end} when they take the position that escape from ill is the reality and upper limit of the good.
Second Torquatus in Book One of On Ends, implying that he himself (Torquatus) disagrees with Epicurus as to what kind of proof is necessary:
QuoteIX. ‘First, then,’ said he, ‘I shall plead my case on the lines laid down by the founder of our school himself: I shall define the essence and features of the problem before us, not because I imagine you to be unacquainted with them, but with a view to the methodical progress of my speech. The problem before us then is, what is the climax and standard of things good, and this in the opinion of all philosophers must needs be such that we are bound to test all things by it, but the standard itself by nothing. Epicurus places this standard in pleasure, which he lays down to be the supreme good, while pain is the supreme evil; and he founds his proof of this on the following considerations.
[30] Every creature, as soon as it is born, seeks after pleasure and delights therein as in its supreme good, while it recoils from pain as its supreme evil, and banishes that, so far as it can, from its own presence, and this it does while still uncorrupted, and while nature herself prompts unbiased and unaffected decisions. So he says we need no reasoning or debate to shew why pleasure is matter for desire, pain for aversion. These facts he thinks are simply perceived, just as the fact that re is hot, snow is white, and honey sweet, no one of which facts are we bound to support by elaborate arguments; it is enough merely to draw attention to the fact; and there is a difference between proof and formal argument on the one hand and a slight hint and direction of the attention on the other; the one process reveals to us mysteries and things under a veil, so to speak; the other enables us to pronounce upon patent and evident facts. Moreover, seeing that if you deprive a man of his senses there is nothing left to him, it is inevitable that nature herself should be the arbiter of what is in accord with or opposed to nature. Now what facts does she grasp or with what facts is her decision to seek or avoid any particular thing concerned, unless the facts of pleasure and pain?
[31] There are however some of our own school, who want to state these principles with greater refinement, and who say that it is not enough to leave the question of good or evil to the decision of sense, but that thought and reasoning also enable us to understand both that pleasure in itself is matter for desire and that pain is in itself matter for aversion. So they say that there lies in our minds a kind of natural and inbred conception leading us to feel that the one thing is t for us to seek, the other to reject. Others again, with whom I agree, finding that many arguments are alleged by philosophers to prove that pleasure is not to be reckoned among things good nor pain among things evil, judge that we ought not to be too condent about our case, and think that we should lead proof and argue carefully and carry on the debate about pleasure and pain by using the most elaborate reasonings.
