人类的思想和行为是自然的一部分，因此可以通过自然科学的方法来研究。

Focus on directions rather than destinations. Who knows their destiny？ But maintain the right direction and you’ll arrive at where you want to go.

I prefer to supervise the whole operations of the government myself rather than entrust the public business to subordinates.

He who wants to do good knocks at the gate;he who loves finds the gate open.