Let him voyage, speculate, see all that he can, do all that he may; his soul has as many lives as a cat; he will live in all weathers, and never be a halfpenny the worse.
让他去远游、去思索,尽可能多看,尽可能多做;他的灵魂像猫一样有着好几条命,经历种种风雨,也不会损伤分毫。
— Robert Louis Stevenson · Virginibus Puerisque, and Other Papers · Crabbed Age and Youth —