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

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

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

Science brings men nearer to God.

It is surmounting difficulties that makes heroes.

The artificial products do not have any molecular dissymmetry; and I could not indicate the existence of a more profound separation between the products born under the influence of life and all the others.

Imagination should give wings to our thoughts but we always need decisive experimental proof, and when the moment comes to draw conclusions and to interpret the gathered observations, imagination must be checked and documented by the factual results of the experiment.