Increased means and increased leisure are the two civilizers of man.
Knowledge must be gained by ourselves. Mankind may supply us with facts; but the results, even if they agree with previous ones, must be the work of our own minds.
One should conquer the world, not to enthrone a man, but an idea; for ideas exist forever.
It is the fashion to style the present moment an extraordinary crisis.
Books are the curse of the human race.
I do not believe such a quality as chance exists. Every incident that happens must be a link in a chain.