不要等待完美的时机，抓住时机并让它变得完美。
Don’t wait for the perfect moment—take the moment and make it perfect.
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.
The present is always an unstable place, the past is where we think we know where we are.
统计假设检验是一个古老的问题，但其现代处理始于内曼和皮尔逊的工作。
我不去想过去，唯一重要的是永恒的现在。