文明的真正考验不是人口普查，不是城市的规模，也不是庄稼，而是国家培养出的人的类型。

所有人都存在危险。自由政府的唯一准则应该是不要信任任何拥有权力的人，以免危及公共自由。

"Grief is not a line, carrying you infinitely further from loss. It is a circle, and you come back, again and again, to the same place."

The best way to predict the future is to invent it. Don't worry about what anybody else is going to do. The best way to predict the future is to invent it.

Short-term gains in forestry often lead to long-term losses for the planet.