I am fascinated by Spinoza's pantheism, but admire even more his contributions to modern thought because he is the first philosopher to deal with the soul and the body as one, not two separate things

Great spirits have always found violent opposition from mediocre minds. The latter cannot understand it when a man does not thoughtlessly submit to hereditary prejudices but honestly and courageously uses his intelligence.

The pursuit of knowledge is more valuable than its possession.

I believe that pipe smoking contributes to a somewhat calm and objective judgement in all human affairs.

If I had only one hour to save the world, I would spend fifty-five minutes defining the problem, and only five minutes finding the solution.

It stands to the everlasting credit of science that by acting on the human mind it has overcome man's insecurity before himself and before nature.

All these primary impulses, not easily described in words, are the springs of man's actions.