[201] These are the requirements they set up, and yet they have never heard me make such promises, nor have they ever seen like results in the other arts and disciplines. On the contrary, all knowledge yields itself up to us only after great effort on our part, and we are by no means all equally capable of working out in practice what we learn. Nay, from all our schools only two or three students turn out to be real champions,[106] the rest retiring from their studies into private life.[107]