解释：只是一种声音就没有听头，只是一种颜色就没有文采，只是一种味道就不成其为美味，只是一种事物就无法进行衡量比较。

I’ve never been afraid of death. It’s the process of dying that worries me.

赚大钱不在于买卖，而在等待。

The key to a successful database system is its ability to evolve with the changing needs of its users.