It seems to me that if you or I must choose between two courses of thought or action, we should remember our dying and try so to live that our death brings no pleasure to the world.

Physics is not just a science, it is a way of thinking about the world.

农民是土地真正的守护者；他们的角色现在比以往任何时候都更为关键。

只要是自己不爱的女人，男人都不挑剔。