Plato Epinomis 974

And our time must be a short one, I do not say in the reckoning of the wretched, but on any supposition of what is tolerable. It does seem to give just a breathing-space about the middle of human life: yet swiftly old age is upon us, and must make any of us loth ever to live our life again, when one reckons over the life one has lived—unless one happens to be a bundle of childish notions. And what, pray, is my evidence for this? It is that such is the nature of the matter now under inquiry 974b in our discussion. We are inquiring, you know, in what way we shall become wise, presuming that each of us has this power in some sort or other: but it evades and escapes us as soon as we attempt any knowledge of reputed arts or knowledges or any of the ordinary sciences, as we suppose them to be; for none of them is worthy to be called by the title of the wisdom that pertains to these human affairs. Yet the soul firmly believes and divines that in some fashion she has it, 974c but what it is that she has, or when, or how, she is quite unable to discover. Is not this a fair picture of our puzzle about wisdom and the inquiry that we have to make—a greater one than any of us could expect who are found able to examine ourselves and others intelligently and consistently by every kind and manner of argument? Is the case not so, or shall we agree that so it is?

We shall probably agree with you on that, my good sir, 974d in the hope which in time you will surely give us of forming hereafter the truest opinion on these matters.

Then first we must go through the other sciences, which are reputed as such, but do not render him wise who acquires and possesses them; in order that, having put them out of the way, we may try to bring forward those that we require, and having brought them forward, to learn them.
  First, therefore, let us observe that while the sciences which are first needs of the human race 974e are about the most necessary and truly the first, yet he who acquires a knowledge of them, though in the beginning he may have been regarded as wise in some sort, is now not reputed wise at all, but rather incurs reproach 975a by the knowledge he has got.