空间是一种物质。

You have to be willing to fail to succeed.

Men become old, but they never become good.

理论计算机科学是一个领域，其中深刻的数学见解导致了实用的计算工具。

In business, you have to be willing to take risks. If you don't take risks, you won't achieve anything.

Live within your income and save so you can invest.Learn what you need to learn.

译文：看遍世间万事，只有钱财会替人说话；看穿人情世故，只让人寒心。赏析：世态炎凉，人情淡薄，钱财和利益能看清一个人的品质。