thereisnodoubtthathappinessisthemostpreciousthingintheworld.Withoutit,lifewillbeemptyandmeaningless.Ifyouwishtoknowhowtogethappiness,youmustpayattentiontothefollowingtwopoints.First,healthisthesecretofhappiness(thekeytohappiness).Onlyastrongmancanenjoythepleasureoflife.Secondly,happinessconsistsincontentment.Amanwhoisdissatisfiedwithhispresentconditionisalwaysindistress. 　　翻译：无疑开心是世界上最有意义的东西.没有它,生活将会空虚而没有意义.如果你知道如何变得开心,你必须留意以下两点：首先,健康是开心的秘诀.一个强壮的人能欣赏生活的乐趣.其次,开心贵在知足.一个不满足于他目前生活状况的人总是会心事重重.