The great proof of madness is the disproportion of one's designs to one's means.
The advance and perfecting of mathematics are closely joined to the prosperity of the nation.
Water, air, and cleanness are the chief articles in my pharmacy.
One must change one's tactics every ten years if one wishes to maintain one's superiority.
Conquests will come and go but Delambre's work will endure.
He who fears being conquered is sure of defeat.