我一直在努力突破自我。
人類是一種非常奇特的生物。他以為自己有一個靈魂，其實他有幾十個。
We must invest in people as much as we invest in machinery.
中心地的等級越高，其數(shù)量越少，影響范圍越大。
Fame is not the most important thing in life. The most important thing is to be happy.
我們必須將地球視為一個單一的有機體，并尊重它。
The utility of an idea determines its place in mental life.