It is high time for me to depart, for at my age I now begin to see things as they really are.

A true philosopher is like an elephant; he never puts the second foot down until the first one is solidly in place.

Neatness is a crowning grace of womanhood.

We must always skim over pleasures. They are like marshy lands that we must travel nimbly, hardly daring to put down our feet.

A philospher sees the Earth as a large planet, travelling through the heavens, covered with fools

Leibniz never married; he had considered it at the age of fifty; but the person he had in mind asked for time to reflect. This gave Leibniz time to reflect, too, and so he never married.

A work of morality, politics, criticism will be more elegant, other things being equal, if it is shaped by the hand of geometry.