Compounds of gaseous substances with each other are always formed in very simple ratios, so that representing one of the terms by unity, the other is…

- Joseph Louis Gay-Lussac

We are perhaps not far removed from the time when we shall be able to submit the bulk of chemical phenomena to calculation.

- Joseph Louis Gay-Lussac

In the natural sciences, and particularly in chemistry, generalities must come after the detailed knowledge of each fact and not before it.

- Joseph Louis Gay-Lussac

If one were not animated with the desire to discover laws, they would escape the most enlightened attention.

- Joseph Louis Gay-Lussac

At Arcueil ... I dined in distinguished company... There was a lot of very interesting discussion. It is these gatherings which are the joy of life.

- Joseph Louis Gay-Lussac