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.

Modesty in women has two special advantages,--it enhances beauty and veils uncomeliness.

They will have the World to be in Large, what a Watch is in Small; which is very regular, and depends only upon the just disposing of the several Parts of the Movement.

It is the passions that do and undo everything.

Women react differently: a French woman who sees herself betrayed by her husband will kill his mistress; an Italian will kill her husband; a Spaniard will kill both; and a German will kill herself.

As astronomy is the daughter of idleness, geometry is the daughter of property.

It takes time to ruin a world, but time is all it takes.