关键不在于我们相信什么，而在于为何相信；道德责任由此开始。

Doublethink means the power of holding two contradictory beliefs in one's mind simultaneously, and accepting both of them.

The iron rule of nature is: you get what you reward for. If you want ants to come, you put sugar on the floor.

跨行业合作是解决当今重大问题关键。