君子之学,务求在己而已。毁誉荣辱之来,非独不以动其心,且资之以为切磋砥砺之地。
君子的学问,关键在于自身。外界的毁誉荣辱,不仅不会动摇其心志,反而会成为磨砺自己的机会。
物理学不仅仅是解决问题,它是关于理解现实的本质。
最好的故事是那些拒绝完结的故事。
The desires, and other passions of man, in themselves, are in his own power; his real difficulties are, to know when they are to be controlled, and when not.