The discovery of a good wine is increasingly better for mankind than the discovery of a new star.

If you do not rest on the good foundation of nature, you will labour with little honor and less profit.

Mechanics is the paradise of the mathematical sciences because by means of it one comes to the fruits of mathematics.

Those who are enamoured of practice without science are like a pilot who goes into a ship without rudder or compass and never has any certainty of where he is going. Practice should always be based upon a sound knowledge of theory.

You will never have a greater or lesser dominion than that over yourself.

...The world wouldn't be the world, without trouble.

The light and heat of the universe comes from the sun, and its cold and darkness from the withdrawal of the sun.