The secret of happiness is to expand your interests as much as possible and to be as kind as possible to the people and things that interest you.
A good world needs knowledge， kindliness， and courage； it does not need a regretful hankering after the past or a fettering of the free intelligence by the words uttered long ago by ignorant men.
The time you enjoy wasting is not wasted time.
It has been said that man is a rational animal. All my life I have been searching for evidence which could support this.
The secret to happiness is to face the fact that the world is horrible.
Fear is the main source of superstition， and one of the main sources of cruelty. To conquer fear is the beginning of wisdom， in the pursuit of truth as in the endeavour after a worthy manner of life.
Men are born ignorant， not stupid； they are made stupid by education.
幸福的秘诀是：尽量扩大你的兴趣，对感兴趣的人和物尽可能友善。
一个良好的世界需要知识、善良和勇气；它不需要对过去的后悔，也不需要被无知之人长时间前说过的话所束缚的自由智慧。
你享受浪费的时间并不算白白浪费。
有人说人是理性的动物。我一生都在寻找可以支持这一说法的证据。