There are only two kinds of people who are really fascinating—people who know absolutely everything and people who know absolutely nothing.

Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude.

（一个人）在本不应结束的点上结束、舍弃了自己的努力，这样的人就什么事都可能结束放弃。对于应该厚待与重视的人，没有厚待重视而是慢（薄）待轻视，那么他对什么人、什么事都可以慢待轻蔑。这样的人，向前进行的时候锐气十足，（遇到难点）倒退下来，也会非常迅速。

上天不会因人们害怕寒冷而让冬天消失，大地不会因人们厌恶险峻而停止其广大。君子不会因小人喧嚣而改变自己的品行。

You cannot hope to build a better world without improving the individuals. To that end, each of us must work for our own improvement and, at the same time, share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful.

最好的投资不是技术，而是能够执行愿景的人。

"Always be prepared for the unexpected."