专注于你能控制的事情,不要浪费精力在你无法控制的事情上。
纸上的每一个痕迹都是一个政治行为。
Quality is never an accident; it is always the result of intelligent effort.
Every discovery in physics opens a door to a new mystery, and that is the beauty of science.
Quality is not a cost; it is an investment.