Whatever a theologian regards as true must be false: there you have almost a criterion of truth.

Idleness is the parent of psychology.

I live in my own place - have never copied anyone even half, and at any master who lacks the grace - to laugh at himself - I laugh.

People who comprehend a thing to its very depths rarely stay faithful to it forever. For they have brought its depths into the light of day: and in the depths there is always much that is unpleasant to see.

Ye shall only have foes to be hated; but not foes to be despised: ye must be proud of your foes.

We are unknown to ourselves, we men of knowledge - and with good reason. We have never sought ourselves - how could it happen that we should ever find ourselves? It has rightly been said: "Where your treasure is, there will your heart be also"; our treasure is where the beehives of our knowledge are.

There is a rollicking kindness that looks like malice.