The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.

"Love is scary: it changes; it can go away. That's the part of the risk."

The key to success is to keep growing in all areas of life - mental, emotional, spiritual, as well as physical.

只有尊重自然，才能获得长久的回报。

永远不要停止学习，因为世界永远不会停止变化。