The legs are the wheels of creativity.

I do not believe that a moral philosophy can ever be founded on a scientific basis. … The valuation of life and all its nobler expressions can only come out of the soul’s yearning toward its own destiny. Every attempt to reduce ethics to scientific formulas must fail. Of that I am perfectly convinced.

Philosophers play with the word, like a child with a doll.... It does not mean that everything in life is relative.

You do not really understand something unless you can explain it to your grandmother.

I think and think for months and years. Ninety-nine times, the conclusion is false. The hundredth time I am right.

I don't believe in mathematics.

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