天行有常,不为尧存,不为桀亡。
自然规律是亘古不变的,不会因尧的仁德而存在,不会因桀的暴虐而消亡。
一流智力的检验标准是同时在大脑中持有两种相反的想法,并且仍然保持功能的能力。
The best way to predict the future is to create it.
Happiness is rarely absent; it is we that know not of its presence.