The biggest risk is not taking any risk. In a world that's changing quickly, the only strategy that is guaranteed to fail is not taking risks.
A proof tells us where to concentrate our doubts.
伟大的本质在于认识到美德就足够了。
书籍是最安静、最恒久的朋友;它们是最易接近、最明智的顾问,也是最耐心的老师。