It's not what you're looking for trouble, but something that you're not sure of, but in fact, it's not.
永远不要停止学习；世界总是在变化。
要快乐，既需要忘记，也需要记住。
The best way to predict the future is to invent it.
"A personality is a full congress of orators and pressure groups, of children, demagogues, communists, isolationists, war mongers, mugwumps, grafters, prayer-makers, adventurers and clerks; with each of these in a minority of one."
