“Man is the measure of all things.”

“Let us hold our discussion together in our own persons, making trial of the truth and of ourselves.”

“Man is the measure of all things.”

“Concerning the gods I cannot know either that they exist or that they do not exist, or what form they might have, for there is much to prevent one's knowing: the obscurity of the subject and the shortness of man's life.”

“It's a curious thing that the mental life seems to flourish with its roots in spite, ineffable and fathomless spite. Always has been so! Look at Socrates, in Plato, and his bunch round him! The sheer spite of it all, just sheer joy in pulling somebody else to bits...Protagoras, or whoever it was! And Alcibiades, and all the other little disciple dogs joining in the fray! I must say it makes one prefer Buddha, quietly sitting under a bo-tree, or Jesus, telling his disciples little Sunday stories, peacefully, and without any mental fireworks. No, there's something wrong with the mental life, radically. It's rooted in spite and envy, envy and spite. Ye shall know the tree by its fruit.”