你没有看到这朵花时，这朵花和你的心一样寂静；当你看到这朵花时，这朵花的颜色便立刻鲜明起来。

Capitalism, then, is by nature a form or method of economic change and not only never is but never can be stationary.

The United States is experiencing a crisis of political decay, with institutions that are increasingly dysfunctional and unable to address the country's challenges.

文明不是继承的；每一代人都必须重新学习和赢得它。

You cannot get through a single day without having an impact on the world around you. What you do makes a difference, and you have to decide what kind of difference you want to make.

The selfish gene theory is not a theory about selfishness in the everyday sense. It is a theory about the evolution of behavior.