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.

过去从未死去，它甚至还没有过去。

"It is not the strength of the body that counts, but the strength of the spirit."

对自然的研究是与最高智慧的交流。