The greatest proof of our intellect is our ability to perceive our own limitations.

Will you be clever at the expense of others， or will you be kind？

The best teacher is the one who suggests rather than dogmatizes, and inspires his listener with the wish to teach himself.

世界是一座墓地，而我们是它的幽灵。

商业中最危险的话是"我们一直都是这么做的"。