When I look at the world I'm pessimistic, but when I look at people I am optimistic.
数据是非常愚蠢的；它们不会告诉你任何关于因果关系的信息。
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.
Happiness is not a right; it is a rare and precious exception.