The more I see of men, the better I like my dog.

Though I may not be a king in my future life, so much the better: I shall nevertheless live an active life and, on top of it, earn less ingratitude.

I have no fault to find with those who teach geometry. That science is the only one which has not produced sects; it is founded on analysis and on synthesis and on the calculus; it does not occupy itself with the probable truth; moreover it has the same method in every country.

It is disgusting to note the increase in the quantity of coffee used by my subjects and the amount of money that goes out of the country in consequence. Everybody is using coffee. If possible, this must be prevented. My people must drink beer.

A man with his heart in his profession imagines and finds resources where the worthless and lazy despair.

Man is made for error; it enters his mind naturally, and he discovers a few truths only with the greatest effort.

To your care and recommendation am I indebted for having replaced a half-blind mathematician with a mathematician with both eyes, which will especially please the anatomical members of my Academy.