The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.
市场并不完美,但设计良好的市场接近完美。
Take everything you like seriously, except yourselves.
Every story I write starts with a question I can't answer.
Critical comments by students should be taken in a friendly spirit, accumulation of material should not stifle the student’s independence.
确实,天才的天赋和他的人类品质有时会差异如此巨大,人们不得不怀疑天赋平庸点也许是件好事。