建筑是关于创造内外之间的门槛。

Leadership is about making the tough decisions and standing by them, even when they're unpopular.

The only thing I know is that I don't know anything.

解释：先前所使用的，现在或许要抛弃。现在要抛弃的，将来或许会用到。

一个幸福晚年的秘决不是别的，而是与孤寂签订一个体面的协定。