"The greatest wealth is to live content with little."

每一个挑战都是学习和改进的机会。

You must feel that you already have what you want, and this feeling will bring it into your reality.

The past is not dead; it is not even past.

In mining, the real competition is often against the market's short-term mindset.

再说，义就是匡正的意思，不能以下正上，必须是以上正下。 

数学不是沿着一条清理干净的高速公路小心翼翼地行进，而是一次进入陌生荒野的旅程，探险者常常会迷路。