无论多么聪明的人，在他年轻时都曾说过或做过一些事情，后来回想起来会感到不快，以至于如果可能的话，他会很高兴地从记忆中抹去。
Optimists tend to interpret their troubles as transient, controllable, and specific to one situation. Pessimists, on the other hand, believe that their troubles last forever, undermine everything they do, and are uncontrollable.
"The beauty of literature is that it allows us to live a thousand lives in the span of one."
Stay hungry, stay foolish.
The future of physics lies in the unification of quantum mechanics and general relativity.
Every life is in many days, day after day. We walk through ourselves, meeting robbers, ghosts, giants, old men, young men, wives, widows, brothers-in-love, but always meeting ourselves.
