乐观是一种可以学习的技能。
To speak is to risk, but to be silent is to risk more.
The beauty of a mathematical proof lies in its simplicity and inevitability.
A good building must be able to absorb the traces of human life.
Engineering is about solving problems, not just making things look pretty.
要在交易中成功,必须要有规则并遵循它们。