我不会让消极情绪偷走我的快乐。
The only limit is the one you set yourself.
我们生产的每一桶石油都应着眼于最小化我们的足迹。
Quality is not an act, it is a habit.
The task of art today is to bring chaos into order.
数学的本质不仅在于解决问题,还在于提出正确的问题。