解释：依据自己的能力去做事，把握最佳时机采取行动。

Luck has nothing to do with it, because I have spent many, many hours, countless hours, on the court working for my one moment in time.

The great cause of the prosperity of the country is liberty—liberty in the economic system.

学习新编程语言的唯一方法是用它编写程序。