If you love a flower that lives on a star, it is sweet to look at the sky at night. All the stars are a-bloom with flowers.

Demagoguery enters at the moment when, for want of a common denominator, the principle of equality degenerates into the principle of identity.

Once you are my friend, I am responsible for you.

Sorrow is one of the vibrations that prove the fact of living.

The theoretician believes in logic and believes that he despises dreams, intuition, and poetry. He does not recognize that these three fairies have only disguised themselves in order to dazzle him.... He does not know that he owes his greatest discoveries to them.

And now here is my secret, a very simple secret; it is only with the heart that one can see rightly, what is essential is invisible to the eye.

The machine does not isolate man from the great problems of nature but plunges him more deeply into them.