Be realistic, demand the impossible!
"The only true wisdom is in knowing you know nothing."
就有关2003年美国入侵伊拉克后伊发生洗劫事件的评论。
我们还没有学会思考，但我们正在学习。
在数学中，没有捷径可走。
"The very least you can do in your life is to figure out what you hope for. And the most you can do is live inside that hope. Not admire it from a distance but live right in it, under its roof."