我无法确定具体的时间、地点、表情或话语，是什么时候开始的。那是很久以前的事了。在我意识到之前，我已经深陷其中。
I cannot fix on the hour, or the spot, or the look, or the words, which laid the foundation. It is too long ago. I was in the middle before I knew that I had begun.
人类是唯一如此的动物：他爱护他的邻居就如同爱护他自己一样，但是如果对方的宗教神学有问题，他会割断对方的喉咙。
Every day may not be good, but there’s something good in every day.
数学的力量在于它简化复杂事物的能力。
我不会把自己和任何人比较。我会尽我所能做到最好。我会每天努力工作，成为我能成为的最好的人。
The best solutions often come from listening—to nature, to science, and to the people on the ground.