Life is too precious to waste on regrets.

能源的未来在于平衡传统资源和可再生发展。

States are rational actors that seek to maximize their power and security in an anarchic international system.

The mind can be considered as a physical symbol system.

如果你不冒险，你永远不知道自己能取得什么成就。

Within a computer natural language is unnatural.

在计算复杂性的研究中，我们常常发现可能的边界是由我们想象力的极限定义的。

你越是试图忘记，越是记得清楚。