The Erdős discrepancy problem fascinated me because it was so simple to state yet so deep in its implications.

Architecture is a form of meditation.

Disciplining yourself to do what you know is right and important, although difficult, is the highroad to pride, self-esteem, and personal satisfaction.

天下只有具体的事物（器）存在。所谓规律（道）是事物的规律，不能将事物说成是规律的事物。