It seems to me that the natural world is the greatest source of excitement; the greatest source of visual beauty; the greatest source of intellectual interest. It is the greatest source of so much in life that makes life worth living.
可持续性不是一种选择;它是我们对下一代的责任。
There is nothing which I dread so much as a division of the republic into two great parties, each arranged under its leader, and concerting measures in opposition to each other.
Silence can be a form of resistance.
Be scrupulously truthful, even when truth is inconvenient, for it is more inconvenient when you try to conceal it.