We must remember that we do not observe nature as it actually exists, but nature exposed to our methods of perception. The theories determine what we can or cannot observe...Reality is an illusion, albeit a persistent one.

I am convinced there is only one way to eliminate these grave evils, namely through the establishment of a socialist economy, accompanied by an educational system which would be oriented toward social goals.

There's a genius in all of us.

If most of us are ashamed of shabby clothes and shoddy furniture let us be more ashamed of shabby ideas and shoddy philosophies.

Feeling and longing are the motive forces behind all human endeavor and human creations.

Man owes his strength in the struggle for existence to the fact that he is a social animal.

Coincidence is God's way of remaining anonymous.