After all, life is never so jolly or so miserable as people seem to think.

永远不要停止学习，因为生活永远不会停止教导。

I think of a hero as someone who understands the degree of responsibility that comes with his freedom.

Success comes from persistence and the willingness to learn from failures.

Sustainability is not an option, it's a necessity.

Every person must have a thought that changes them, or a book, or a word, or a moment; and if they don't, their life is wasted.

真相很少是纯粹的，也从来不是简单的。