The essence of strategy is that you must set limits on what you’re trying to accomplish.
战略的本质是你必须对你想要完成的事情设定限制。
The world is full of magic things, patiently waiting for our senses to grow sharper.
Sustainability is not an option; it's a necessity for the future of our planet.
有权势的天子，也未必尊贵；穷苦的平民，也未必低贱。贵贱的分别，在于行为的美恶。
不要太相信什么正直无私，对任何人都要提高警惕。
数学中的合作是必不可少的；没有人能独自解决所有问题。