The flavor of wine is like delicate poetry.

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.

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

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

Without theory, practice is but routine born of habit. Theory alone can bring forth and develop the spirit of inventions.

Did you ever observe to whom the accidents happen? Chance favors only the prepared mind.

My opinion - nay more, my conviction - is that, in the present state of science, as you rightly say, spontaneous generation is a chimera; and it would be impossible for you to contradict me, for my experiments all stand forth to prove that spontaneous generation is a chimera.