"The world is a game, and the game is a mirror."

We don't inherit the earth from our ancestors; we borrow it from our children—this is especially true in forestry.

The first fruit of this imagination - and the first lesson of the social science that embodies it - is the idea that the individual can understand his own experience and gauge his own fate only by locating himself within his period, that he can know his own chances in life only by becoming aware of those of all individuals in his circumstances.

解释：能看清深潭中的游鱼的，不是吉祥的好事；能探知别人隐私的，定会招祸遭殃。