Chance favors those who are prepared.

These are the living springs of great thoughts and great actions. Everything grows clear in the reflections from the Infinite.

We affirm the neutrality of Science ... Science is of no country. ... But if Science has no country, the scientist must keep in mind all that may work towards the glory of his country. In every great scientist will be found a great patriot.

I give them experiments and they respond with speeches.

My strength lies solely in my tenacity.

Are the atoms of the dextroacid (tartaric) grouped in the spirals of a right-hand helix or situated at the angles of an irregular tetrahedron, or arranged in such or such particular unsymmetrical fashion? We are unable to reply to these questions. But there can be no reason for doubting that the grouping of the atoms has an unsymmetrical arrangement with a non-superimposable image. It is not less certain that the atoms of the laevo-acid realize precisely an unsymmetrical arrangement of the inverse of the above.

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