The Burden of Friday the 13th

“62 At the same time this Stoic doctrine can be stated in a form which we do not object to, and indeed ourselves endorse. For Epicurus thus presents his Wise Man who is always happy: his desires are kept within bounds; death he disregards; he has a true conception, untainted by fear, of the Divine nature; he does not hesitate to depart from life, if that would better his condition. Thus equipped he enjoys perpetual pleasure, for there is no moment when the pleasures he experiences do not outbalance the pains; since he remembers the past with gratitude, grasps the present with a full realization of its pleasantness, and does not rely upon the future; he looks forward to it, but finds his true enjoyment in the present. Also he is entirely free from the vices that I instanced a few moments ago, and he derives no inconsiderable pleasure from comparing his own existence with the life of the foolish. More, any pains that the Wise Man may encounter are never so severe but that he has more cause for gladness than for sorrow. ⁶³Again, it is a fine saying of Epicurus that ‘the Wise Man is but little interfered with by fortune: the great concerns of life, the things that matter, are controlled by his own wisdom and reason’¹; and that ‘no greater pleasure could be derived from a life of infinite duration than is actually afforded by this existence which we know to be finite.’² Logic, on which your school lays such stress, he held to be of no effect either as a guide to conduct or as an aid to thought. Natural Philosophy he deemed all‑important. This science explains to us the meaning of terms, the nature of predication, and the law of consistency and contradiction; secondly, a thorough knowledge of the facts of nature relieves us of the burden of superstition, frees us from fear of death, and shields us against the disturbing effects of ignorance, which is often in itself a cause of terrifying apprehensions; lastly, to learn what nature’s real requirements are improves the moral character also. Besides, it is only by firmly grasping a well-established scientific system, observing the Rule or Canon that has fallen as it were from heaven so that all men may know it — only by making that hope always to stand fast in our belief, unshaken by the eloquence of any man. ⁶⁴On the other hand, without a full understanding of the world of nature it is impossible to maintain the truth of our sense-perceptions. Further, every mental presentation has its origin in sensation: so that no certain knowledge will be possible, unless all sensations are true, as the theory of Epicurus teaches that they are. Those who deny the validity of sensation and say that nothing can be perceived, having excluded the evidence of the senses, are unable even to expound their own argument. Besides, by abolishing knowledge and science they abolish all possibility of rational life and action. Thus Natural Philosophy supplies courage to face the fear of death; resolution to resist the terrors of religion; peace of mind, for it removes all ignorance of the mysteries of nature; self-control, for it explains the nature of the desires and distinguishes their different kinds; and, as I showed just now, the Canon or Criterion of Knowledge, which Epicurus also established, gives a method of discerning truth from falsehood." (Cicero, On the Ends of Good and Evil, Book I, Chaper XIX)