Greatness is not a function of circumstance. Greatness, it turns out, is largely a matter of conscious choice.
伟大不是环境的结果。事实证明，伟大在很大程度上是一种有意识的选择。
What we learn from history is that people don't learn from history.
Sometimes the simplest solutions in chemistry are the most elegant and powerful.
言语得当，是智慧的表现；沉默得当，也是智的表现。