The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

You have to be willing to take risks. If you’re not, you’re not going to make money.

我喜欢争论，我喜欢辩论，我不希望任何人只是坐在我边上，同意我的观点，这不是他们的工作。