The best scientists are those who never stop asking why.
Happiness in this world, when it comes, comes incidentally. Make it the objet of pursuit, and it leads us a wild-goose chase, and is never attained. Follow some other object, and very possibly we may find that we have cought happiness without dreaming of it.
要找到自己，就要为自己思考。
The study of psychology is the study of life's problem-solving mechanisms.
Space is not empty; it is full of possible interactions.