The best time to plant a tree was 20 years ago. The second best time is now.
种一棵树最好的时间是20年前，其次是现在。
The only real voyage of discovery consists not in seeking new landscapes, but in having new eyes.
"I am not a writer, I am a word."
By the help of microscopes, there is nothing so small as to escape our inquiry; hence there is a new visible world discovered to the understanding.
The real challenge is not to build a cheap house, but to build a house that is cheap to live in.