The fear of death follows from the fear of life. A man who lives fully is prepared to die at any time.

We are all alone, born alone, die alone, and—in spite of True Romance magazines—we shall all someday look back on our lives and see that, in spite of our company, we were alone the whole way.

世界上最好和最美丽的东西是看不见甚至摸不到的——它们必须用心去感受。

The most important thing in science is not to stop questioning.