我们都是进化之树上的叶子。
We are all leaves on the great tree of evolution.
在物理学的世界里，我们经常发现最简单的问题最难回答。
If a lion could talk, we could not understand him.
All children have to be deceived if they are to grow up without trauma.
Risk management is the most important thing to be well understood. If you don't have a good risk management system, you are going to blow up.