The true system of the World has been recognized, developed and perfected...Everything has been discussed and analysed, or at least mentioned.

Geometry, which should only obey Physics, when united with it sometimes commands it. If it happens that the question which we wish to examine is too complicated for all the elements to be able to enter into the analytical comparison we wish to make, we separate the more inconvenient [elements], we substitute others for them, less troublesome but also less real, and we are surprised to arrive, notwithstanding a painful labour, only at a result contradicted by nature; as if after having disguised it, cut it short or altered it, a purely mechanical combination could give it back to us.

The true system of the World has been recognized, developed and perfected...Everything has been discussed and analysed, or at least mentioned.

In England it was enough that Newton was the greatest mathematican of his century; in France he would have been expected to be agreeable too.

High office, is like a pyramid; only two kinds of animals reach the summit — reptiles and eagles.

Push on and faith will catch up with you.

Gaming is the destruction of all decorum; the prince forgets at it his dignity, and the lady her modesty.