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?

Chance favours the trained mind.

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.

Since the most ancient times, all men, and particularly those who endeavored in the practice of medicine, have brought closer together two natural phenomena of capital importance: illness or fever and fermentation.

Oh my goodness the mystery that has prompted my objective. My quality lies exclusively in my tirelessness.

There are no such things as applied sciences, only applications of science.

Let me tell you the secret that has led me to my goal. My strength lies solely in my tenacity.