A great social reformer.

You cannot have power for good without having power for evil too. Even mother's milk nourishes murderers as well as heroes.

A perpetual holiday is a good working definition of hell.

Consciousness of a fact is not knowing it: if it were, the fish would know more of the sea than the geographers and the naturalists.

I'm sick of all the reasonable people: they see all the reasons for doing nothing

You have nothing to do but mention the quantum theory, and people will take your voice for the voice of science, and belive anything.

Never fret for an only son, the idea of failure will never occur to him.