In mathematics, the journey from question to answer is often more enlightening than the answer itself.
Data is the new oil, but only if you refine it.
尊重孩子正在进行的所有合理的活动并试着了解,是我们教育方法中最首要的原则。
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.