“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.”

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

I am on the edge of mysteries and the veil is getting thinner and thinner.

Where are the real sources of human dignity, freedom and modern democracy, if not in the concept of infinity to which all men are equal?

Gentlemen, it is the microbes who will have the last word.

The Ancients understood the omnipotence of the underside of things.

Will opens the door to success, both brilliant and happy.

whatever your career may be, do not let yourselves become tainted by a deprecating and barren scepticism, do not let yourselves be discouraged by the sadness of certain hours which pass over nations.

The only thing that can bring joy is work.

To know how to wonder and question is the first step of the mind toward discovery.

Intuition is given only to him who has undergone long preparation to receive it.

I am utterly convinced that Science and Peace will triumph over Ignorance and War, that nation will eventually unite not to destroy but to edify, and that the future will belong to those who have done the most for the sake of suffering humanity.

Where observation is concerned, chance favors only the prepared mind.

It is surmounting difficulties that make heroes.

Chance favors the prepared mind.

There is a time in every man’s life when he looks to his God, when he looks at his life, when he wonders how he will be remembered.

When I approach a child he inspires in me two sentiments tenderness for what he is and respect for what he may become.