It has been said, only too truly, that Plato was the inventor of both our secondary schools and our universities. I do not know a better argument for an optimistic view of mankind, no better proof of their indestructible love for truth and decency, of their originality and stubbornness and health, than the fact that this devastating system of education has not utterly ruined them. In spite of the treachery of so many of their leaders, there are quite a number, old as well as young, who are decent, and intelligent, and devoted to their task. ‘I sometimes wonder how it was that the mischief done was not more clearly perceptible,’ says Samuel Butler, ‘and that the young men and women grew up as sensible and as goodly as they did, in spite of the attempts almost deliberately made to warp and stunt their growth. Some doubtless received damage, from which they suffered to their life’s end; but many seemed little or none the worse, and some almost the better. The reason would seem to be that the natural instinct of the lads in most cases so absolutely rebelled against their training, that do what their teachers might they could never get them to pay serious heed to it.’
Karl Popper, The Open Society and its Enemies