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.

 政治精神倾向于使人们彼此疏远。

Quality is more important than quantity. One home run is much better than two doubles.

恐惧不能阻止死亡，它阻止生活。

When you are young, you think that the world is a place where you can live as you choose. But as you get older, you realize that the world is a place where you have to live as you must.

I don't know what I would do if I didn't act. I think I would go mad.