It is the passions that do and undo everything.

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

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

Nature is never so admired as when she is understood.

There are three things I have loved but never understood. Art, music and women.

If I had my hand full of truth, I would take good care how I opened it.

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