Nothing is lost and nothing is created in the operations of art as those of nature.

It is not the germs we need worry about. It is our inner terrain.

How do you know that the incessant progress of science will not compel scientists to consider that life has existed during eternity, and not matter?

If science has no country, the scientist should have one, and ascribe to it the influence which his works may have in this world.

One does not ask of one who suffers: What is your country and what is your religion? One merely says: You suffer, that is enough for me.

Posterity will one day laugh at the sublime foolishness of the modern materialistic philosophy. The more I study nature, the more I stand amazed at the work of the Creator. I pray while I am engaged at my work in the laboratory.

The Greeks bequeathed to us one of the most beautiful words in our language--the word 'enthusiasm'--en theos--a god within. The grandeur of human actions is measured by the inspiration from which they spring. Happy is he who bears a god within, and who obeys it.