数学是为数学家而写的。
我相信积极思考和形象化训练。
Worth repeating: measure twice， cut once.
Short-term gains should never compromise long-term sustainability.
可持续发展要求我们在经济增长和环境保护之间取得平衡。
The best investment you can make is in yourself.
When we love, we always strive to become better than we are.