The best time to plant a tree was 25 years ago. The second best time is today.
天文学的历史是一部视野不断扩展的历史。
Don't write your name on sand, waves will wash it away. Don't write your name in sky, wind may blow it away. Write your name in the hearts of people, that's where it will stay.
Writing is a way of discovering what you think, of exploring the world and your place in it.