Vigorous societies harbor a certain extravagance of objectives, so that men wander beyond the safe provision of personal gratifications.

From the moment of birth we are immersed in action, and can only fitfully guide it by taking thought.

By relieving the brain of all unnecessary work, a good notation sets it free to concentrate on more advanced problems, and in effect increases the mental power of the race.

The progress of Science consists in observing interconnections and in showing with a patient ingenuity that the events of this ever-shifting world are but examples of a few general relations, called laws. To see what is general in what is particular, and what is permanent in what is transitory, is the aim of scientific thought.

I put forward as a general definition of civilization, that a civilized society is exhibiting the five qualities of Truth, Beauty, Adventure, Art, Peace.

The paradox is now fully established that the utmost abstractions are the true weapons with which to control our thought of concrete fact.

The fixed person for the fixed duties who in older societies was such a godsend, in future will be a public danger.