礼貌,并不需要花钱。用完马桶后,把马桶盖放下;上电梯时,耐心等别人出来再进去;把购物车放回指定区域;在借东西时,归还时要东西的状态要比你借的时候还要好(例如给车加满油、把物品清理干净)。
We first make our habits, and then our habits make us.
对物体基本粒子相对重量的研究是一个全新的课题,就我所知,此前无人涉足。
Computer programming is an art, because it applies accumulated knowledge to the world, because it requires skill and ingenuity, and especially because it produces objects of beauty.