The more successful I become, the more I need a man.

The power elite is composed of men whose positions enable them to transcend the ordinary environments of ordinary men and women; they are in positions to make decisions having major consequences.

The historian is a prophet looking backward.

形式化方法的美在于它们能够提供关于系统行为的绝对保证。

The key to good design is understanding forces.

真正的竞争不是企业之间，而是与自己。