EPISTLES LXXXVIII., LXXXIX.
exists of all this which seems to exist, except the universe alone.[1] Zeno of Elea removed all the difficulties by removing one; for he declares that nothing exists. The Pyrrhonean, Megarian, Eretrian, and Academic schools are all engaged in practically the same task; they have introduced a new knowledge, non-knowledge. 45. You may sweep all these theories in with the superfluous troops of “liberal” studies; the one class of men give me a knowledge that will be of no use to me, the other class do away with any hope of attaining knowledge. It is better, of course, to know useless things than to know nothing. One set of philosophers offers no light by which I may direct my gaze toward the truth; the other digs out my very eyes and leaves me blind. If I cleave to Protagoras, there is nothing in the scheme of nature that is not doubtful; if I hold with Nausiphanes, I am sure only of this—that everything is unsure; if with Parmenides, there is nothing except the One;[2] if with Zeno, there is not even the One.
46. What are we, then? What becomes of all these things that surround us, support us, sustain us? The whole universe is then a vain or deceptive shadow. I cannot readily say whether I am more vexed at those who would have it that we know nothing, or with those who would not leave us even this privilege. Farewell.
LXXXIX. ON THE PARTS OF PHILOSOPHY
1. It is a useful fact that you wish to know, one which is essential to him who hastens after wisdom
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