数学不是沿着一条清理得很好的高速公路小心行进，而是一次进入陌生荒野的旅程，探险者常常会迷路。
Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.
The best way to predict the future is to invent it.
The world is full of stories, but the stories are all one.
I have held many things in my hands, and I have lost them all; but whatever I have placed in God's hands, that I still possess.
货币政策中的时间不一致性问题出现在政策制定者一旦经济主体根据宣布的政策采取行动后，就有动机偏离该政策。