实现明天的唯一限制将是我们今天的疑虑。

If you can't be seven feet tall, be seven feet smart.

If your goal does not have a schedule， it is a dream.

The quality of an organization's processes determines the quality of its products and services.

When you have to kill a man it costs nothing to be polite.

模型最重要的不是其假设，而是其结论。