No man really knows about other human beings. The best he can do is to suppose that they are like himself.
在沉默中,我们听到最真实的声音。
你说的话有什么益处呢?如果没有益处还要说,就是白费口舌。 
Better to have 1 super user than 100 ordinary users.
科学必须是世界上的一股善的力量。