Life is 10% what happens to you and 90% how you react to it.
以耗尽地球为代价的利润根本不是利润。
But it is the same with man as with the tree. The more he seeks to rise into the height and light, the more vigorously do his roots struggle earthword, downword, into the dark, the deep - into evil.
动力学的方程在用变分法的语言表达时是完全的。