“Life is no brief candle to me. It is a sort of splendid torch which I have got hold of for the moment.”

You see things; and you say, 'Why?' But I dream things that never were; and I say, 'Why not?'

A life spent making mistakes is not only more honorable, but more useful than a life spent doing nothing.

Progress is impossible without change, and those who cannot change their minds cannot change anything.

The reasonable man adapts himself to the world: the unreasonable one persists in trying to adapt the world to himself.