Every chemical substance, whether natural or artificial, falls into one of two major categories, according to the spatial characteristic of its form. The distinction is between those substances that have a plane of symmetry and those that do not. The former belong to the mineral, the latter to the living world.

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

The more I study nature, the more I stand amazed at the work of the Creator. Science brings men nearer to God.

Blessed is he who carries within himself a God, an ideal, and who obeys it: ideal of art, ideal of science, ideal of the gospel virtues, therein lie the springs of great thoughts and great actions; they all reflect light from the Infinite.

The nights seem to me too long... I am often scolded by Madame Pasteur, but I tell her I shall lead her to fame.

Nothing is lost and nothing is created in the operations of art as those of nature.

Little science takes you away from God but more of it takes you to Him.