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

In good philosophy, the word cause ought to be reserved to the single Divine impulse that has formed the universe.

Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.

Change only favours minds that are diligently looking and preparing for discovery.

What did you do today to receive your instruction?

Never will the doctrine of spontaneous generation recover from the mortal blow struck by this simple experiment.

The universe is asymmetric.