Whenever any one informs us that he has found a man who knows all the arts, and all things else that anybody knows, and every single thing with a higher degree of accuracy than any other man - whoever tells us this, I think that we can only imagine him to be a simple creature who is likely to have been deceived by some wizard or actor whom he met, and whom he thought all-knowing, because he himself was unable to analyse the nature of knowledge and ignorance and imitation.

As for me, all I know is I know nothing.

Wonder is the beginning of all wisdom.

My divine sign indicates the future to me.

Only the extremely ignorant or the extremely intelligent can resist change.

A free soul ought not to pursue any study slavishly, for nothing that is learned under compulsion stays with the mind.

Fame is the perfume of heroic deeds.