Core technologies cannot be bought; they must be developed independently.

The method of psychology must be objective, even when studying subjective phenomena.

Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.

The difference between ordinary and extraordinary is that little extra.

我宣布，毕竟没有什么能比阅读更令人愉快的了！任何事物，人们对它的厌倦远远不如对一本书的厌倦来得快。