I believe four ingredients are necessary for happiness: health, warm personal relations, sufficient means to keep you from want, and successful work.

When I was a child . . . Only virtue was prized, virtue at the expense of intellect, health, happiness, and every mundane good.

What makes a free thinker is not his beliefs, but the way in which he holds them. If he holds them because his elders told him they were true when he was young, or if he holds them because if he did not he would be unhappy, his thought is not free; but if he holds them because, after careful thought, he finds a balance in their favor, then his thought is free, however odd his conclusions may seem.

When it was first proposed to establish laboratories at Cambridge, Todhunter, the mathematician, objected that it was unnecessary for students to see experiments performed, since the results could be vouched for by their teachers, all of them of the highest character, and many of them clergymen of the Church of England.

The key to happiness is accepting one unpleasant reality every day.

Any philosophy worth taking seriously would have to be built upon a firm foundation of unyielding despair.

No man treats a motorcar as foolishly as he treats another human being. When the car will not go, he does not attribute its annoying behavior to sin; he does not say, 'You are a wicked motorcar, and I shall not give you any more petrol until you go.' He attempts to find out what is wrong and to set it right.