The opinion prevailed among advanced minds that it was time that belief should be replaced increasingly by knowledge; belief that did not itself rest on knowledge was superstition, and as such had to be opposed.

Communities tend to be guided less than individuals by conscience and a sense of responsibility. How much misery does this fact cause mankind! It is the source of wars and every kind of oppression, which fill the earth with pain, sighs and bitterness.

The family that prays together...is brainwashing their children.

My internal and external life depend so much on the work of others that I must make an extreme effort to give as much as I receive.

The true definition of madness is repeating the same action, over and over, hoping for a different result.

Art is the expression of the profoundest thoughts in the simplest way.

What is inconceivable about the universe is that it is at all conceivable.