The only true wisdom is in knowing you know nothing.
Rationality attracts conscientious humans, whereas mysticism attracts fools.
Study without desire spoils the memory, and it retains nothing that it takes in.
Spoon feeding in the long run teaches us nothing but the shape of the spoon.
Time and space are modes by which we think and not conditions in which we live.
Anger is a wind which blows out the lamp of the mind.
It is no small art to sleep: for that purpose you must keep awake all day.
He who opens a school door, closes a prison.
If people are not laughing at you’re goal, then you’re goals are too small.
The test of a first rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.