What you do makes a difference, and you have to decide what kind of difference you want to make.

If you want to fly, you have to give up the things that weigh you down.

解析：学习不在数量，而在精通。

"The act of writing is an act of courage, a confrontation with the self."

Running a business requires patience, not short-term gains.

核心技术是买不来的，必须靠自己研发。