The oldest， shortest words—'yes' and 'no'—are those which require the most thought.

Life lessons will be presented to you in the order they are needed. Everything you need to master the lesson is within you. Once you have truly learned a lesson， you will be presented with the next one. If you are alive， that means you still have lessons to learn.

不可能与可能之间的区别在于一个人的决心。

科学的每一次突破都是对人类好奇心和创造力的证明。

诚信是所有成功商业关系的基础。