When you have some success， the feeling of being an imposter can be real. Who am I fooling？ But when you create things that only you — with your unique talents and experience — can do， then you are absolutely not an imposter. You are the ordained. It is your duty to work on things that only you can do.
The real moral test of a society is how it treats those who are at the dawn of life, the children; those who are in the twilight of life, the aged; and those who are in the shadow of life, the sick, the needy and the handicapped.
最好的模型是能够解释数据的最简单模型。
A philosophical problem has the form: "I don't know my way about."
政策规则优于自由裁量，因为它们消除了时间不一致性问题。