过去无法改变，但未来可以。

These walls are very interesting. When you first went to jail, you hated the high walls, and slowly, you get used to it. This is called institutionalization.

What we know is not much. What we do not know is immense.

设计应该解决问题，而不是制造新的问题。

讽刺是反思的快乐，也是智慧的喜悦。