Give me matter, and I will construct a world out of it!

All trades, arts, and handiworks have gained by division of labor... Where the different kinds of work are not distinguished and divided, where everyone is a jack-of-all-trades, there manufactures remain still in the greatest barbarism.

There is a limit where the intellect fails and breaks down, and this limit is where the questions concerning God and freewill and immortality arise.

The only thing permanent is change.

The science of mathematics presents the most brilliant example of how pure reason may successfully enlarge its domain without the aid of experience

All our knowledge begins with the senses...

The wise man can change his mind; the stubborn one, never.