Words are wise men's counters, they do but reckon by them; but they are the money of fools.

You are never too old to set another goal or to dream a new dream.

The only way to do great work is to love what you do.

我认为在生活中冒险很重要。你必须愿意走出你的舒适区。

组合数学是不用计数的计数艺术。