Everyday I remind myself that my inner and outer life are based on the labors of other men.living and dead.and that I must exert my self in order to give in the same measure as I have received and am still receiving.

每天我都提醒着自己：我的精神生活和物质生活都是以别人的劳动为基础的，无论是活着的人，还是死去的人，我必须尽力以同样的分量来报偿我所获得的和至今仍在接受着的东西。——美国科学家 爱因斯坦（Albert Einstein.American scientist）