The best practical advice I can give to the present generation is to practice the virtue which the Christians call love.

To create a healthy philosophy you should renounce metaphysics but be a good mathematician.

It has become a commonplace that aggressiveness also often has its roots in fear. I am inclined to think that this theory has been pushed too far. [...] The type of aggressiveness that is the outcome of timidity is not, I think, that which inspires great leaders; the great leaders, I should say, have an exceptional self-confidence which is not only on the surface, but penetrates deep into the subconscious.

The secrets to happiness include enterprise, exploration of one's interests and the overcoming of obstacles.

Organized people are just too lazy to look for things

So far as I can remember, there is not one word in the Gospels in praise of intelligence.

I think the subject which will be of most importance politically is Mass Psychology... Its importance has been enormously increased by the growth of modern methods of propaganda. Although this science will be diligently studied, it will be rigidly confined to the governing class. The populace will not be allowed to know how its convictions are generated.