It has been said that man is a rational animal. All my life I have been searching for evidence which could support this.

A life which goes excessively against natural impulse is... likely to involve effects of strain that may be quite as bad as indulgence in forbidden impulses would have been. People who live a life which is unnatural beyond a point are likely to be filled with envy, malice and uncharitableness.

The secret of happiness is this: let your interests be as wide as possible, and let your reactions to the things and persons that interest you be as far as possible friendly rather than hostile.

Men who allow their love of power to give them a distorted view of the world are to be found in every asylum: one man will think he is the Governor of the Bank of England, another will think he is the King, and yet another will think he is God. Highly similar delusions, if expressed by educated men in obscure language, lead to professorships of philosophy; and if expressed by emotional men in eloquent language, lead to dictatorships.

Unless you assume a God, the question of life's purpose is meaningless.

If everything has a cause, then God must have a cause. If there can be anything without a cause, it may just be the world as God.

It can be shown that a mathematical web of some kind can be woven about any universe containing several objects. The fact that our universe lends itself to mathematical treatment is not a fact of any great philosophical significance.