To write a good love letter, you ought to begin without knowing what you mean to say, and to finish without knowing what you have written.
精确不仅仅是我们实验的目标;它是自然与我们对话的语言。
Don't watch the clock; do what it does. Keep going.
Do you not see how necessary a world of pains and troubles is to school an intelligence and make it a soul?