Adaptability is the most important skill in today's rapidly changing world.
The best mathematics is simple, but not too simple.
在每一本书中，都有作者灵魂的一部分。
Let me explain. I think it would be very unusual for anyone here, or anyone watching, to be envious of the Queen of England. Even though she is much richer than any of you are, and she's got a very large house, the reason why we don't envy her is because she's too weird.
