Science is not just about discovery, but also about the application of knowledge to improve human life.
A wise man said: before you speak, let your words pass through three gates. At the first gate, ask yourself, "Is it true?" At the second gate, ask "Is it necessary?" At the third gate, ask, "Is it kind?"
唯一把我们和动物区分开的是我们装饰自己的能力。