计算理论为理解什么可以计算、什么不能计算提供了基础。

"The past is never dead. It's not even past."

This was a very short visit, but it plunged the little prince into deep dejection.

追求任何职业或使命的代价是对其丑陋面的深入了解。

真相很少纯粹，也绝不简单。