True discovery often happens at the intersection of curiosity and persistence.
用心不能杂乱，杂乱则心神恍惚不能集中；用心不要劳累，劳累则精神疲倦不能有所收获。
OPEC no longer holds all the cards in global oil markets.
The world is a book, and those who do not read live only one life.
The best way to predict the future is to create it.