Above all things expand the frontiers of science: without this the rest counts for nothing.

The thoughts written on the walls of madhouses by their inmates might be worth publicizing.

What is the good of drawing conclusions from experience? I don't deny we sometimes draw the right conclusions, but don't we just as often draw the wrong ones?

Actual aristocracy cannot be abolished by any law: all the law can do is decree how it is to be imparted and who is to acquire it.

A book which, above all others in the world, should be forbidden, is a catalogue of forbidden books.

I forget most of what I read, just as I do most of what I have eaten, but I know that both contribute no less to the conservation of my mind and my body on that account.

Every condition of the soul has its own sign and expression...So you will see how hard it is to seem original without being so.