历史学家的任务是理解过去，而小说家的任务是让它活过来。
The historian’s task is to understand the past, the novelist’s to make it live.
What you actually pay for something is at least twice the listed price because of the energy， time， money needed to set it up， learn， maintain， repair， and dispose of at the end. Not all prices appear on labels. Actual costs are 2x listed prices.
Every risk is worth taking as long as it's for a good cause, and contributes to a good life.
最好的性能改进是从非工作状态到工作状态的转变。