Whether our efforts are, or not, favored by life, let us be able to say, when we come near to the great goal, I have done what I could.

Analogy cannot serve as proof.

The grandeur of the acts of men are measured by the inspiration from which they spring.

When one works and imagines and dreams of nothing else than the search for answers that God has posed, it is difficult to be so still.

When you believe you have found an important scientific fact, and are feverishly curious to publish it, constrain yourself for days, weeks, years sometimes, fight yourself, try and ruin your own experiments, and only proclaim your discovery after having exhausted all contrary hypotheses. But when, after so many efforts you have at last arrived at a certainty, your joy is one of the greatest which can be felt by a human soul.

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.

Fortune favors the well-prepared.