A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between theories and the best mathematician can notice analogies between analogies.

No man's knowledge here can go beyond his experience.

The highest purpose is to have no purpose at all. This puts one in accord with nature in her manner of operation.

"In Edinburgh, the shadows are long, and the secrets are deeper."

Persist in doing what you love, and don't give up easily even when facing difficulties.

经济研究应旨在为现实世界的决策提供信息。

信心是金融体系中最宝贵的商品。