The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when to be obeyed.
Innovation is not just about creating something new; it's about making what exists better.
"That's the thing about pain. It demands to be felt."
统计方法的目的是为从数据中得出结论提供合理的基础。