A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it.
人类是一种非常奇特的生物。他认为自己有一个灵魂,但他就是一个灵魂;他有一个身体。
"Humor is the great thing, the saving thing. The minute it crops up, all our irritations and resentments slip away and a sunny spirit takes their place."