国际体系的无政府性质迫使国家争夺权力。

We are all alone, born alone, die alone, and—in spite of True Romance magazines—we shall all someday look back on our lives and see that, in spite of our company, we were alone the whole way.

The most important part of teaching is to teach what it is to know.

A building must be both strong and gentle.

Knowledge is the most valuable resource in the universe.