The good life is one inspired by love and guided by knowledge.
The world is full of magical things patiently waiting for our wits to grow sharper.
Man needs, for his happiness, not only the enjoyment of this or that, but hope and enterprise and change.
The only thing that will redeem mankind is cooperation.
Fear is the main source of superstition, and one of the main sources of cruelty. To conquer fear is the beginning of wisdom.
The time you enjoy wasting is not wasted time.
The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt.
Men who are unhappy, like men who sleep badly, are always proud of the fact.
To be without some of the things you want is an indispensable part of happiness.
War does not determine who is right - only who is left.
In all affairs it's a healthy thing now and then to hang a question mark on the things you have long taken for granted.
There is no need to worry about mere size. We do not necessarily respect a fat man more than a thin man. Sir Isaac Newton was very much smaller than a hippopotamus, but we do not on that account value him less.
Why is propaganda so much more successful when it stirs up hatred than when it tries to stir up friendly feeling?
Men are born ignorant, not stupid. They are made stupid by education.
Love is something far more than desire for sexual intercourse; it is the principal means of escape from the loneliness which afflicts most men and women throughout the greater part of their lives.
The degree of one's emotions varies inversely with one's knowledge of the facts.
The theoretical understanding of the world, which is the aim of philosophy, is not a matter of great practical importance to animals, or to savages, or even to most civilised men.
The fundamental defect of fathers, in our competitive society, is that they want their children to be a credit to them.
Those who have never known the deep intimacy and the intense companionship of mutual love have missed the best thing that life has to give.
Three passions, simple but overwhelmingly strong, have governed my life: the longing for love, the search for knowledge, and unbearable pity for the suffering of mankind.