The only person you should try to be better than is the person you were yesterday.
The proof of a system's value is its existence.
Loneliness is the price we pay for self-awareness.
In quantum mechanics, the act of measurement can change the state of the system being measured.
人民有三种忧患:饥饿的得不到食物、寒冷的得不到衣物、劳苦的得不到休息。