我已经履行了我的职责。我证明了庞加莱猜想，我在数学上没有什么可做的了。
The future of energy is diverse. No single source can meet all the world's needs. We need all energies working together.
描述宁静的田园生活，表达淡泊之志。
逻辑学研究不仅仅是关于形式系统，更是关于人类推理的本质。
I'm not a role model. I'm just trying to be myself.
Life is like a bracelet...It has little jewels around it which are like the little bright moments that come along in our lives every now and then...
环境不仅仅是限制因素，更是文化发展中的创造性力量。