Writing is a way of talking without being interrupted.
One does not learn computing by using a hand calculator, but one can forget arithmetic.
The pursuit of mathematical knowledge is a journey that never ends, filled with endless curiosity and wonder.
天下很多所謂可以做的事情，未必都是可以做的??！?
你越是贊美和慶祝你的生活，生活中就越有值得慶祝的東西。