The most powerful tool the Fed has is the power of communication.
Leadership is about making tough decisions today that will benefit future generations.
真相很少纯粹，也绝不简单。
没有人能以纯净的眼光看待世界，他所看到的一切都被特定的习俗、制度和思维方式所过滤。
I think prime numbers are like life. They are very logical but you could never work out the rules, even if you spent all your time thinking about them.
Sustainable quarrying isn't an option; it's our obligation to future generations.