True and great love springs out of great knowledge, and where you know little you can love but little or not at all.

A diamond is just a lump of coal that stuck to its job.

Nature is full of infinite causes that have never occurred in experience.

Black is like a broken vessel, which is deprived of the capacity to contain anything.

When Fortune comes, seize her in front with a sure hand, because behind she is bald.

Those who become enamoured of the art, without having previously applied to the diligent study of the scientific part of it, may be compared to mariners who put to the sea in a ship without rudder or compass and therefore cannot be certain of arriving at the wished for port.

Marriage is like putting your hand into a bag of snakes in the hope of pulling out an eel.