经济学是对人类日常生活事务的研究。

释义：运气不好的时候，即使是黄金也会失去光泽；运气好的时候，连普通的铁也会发光。

A teacher must have a healthy body, the skills of a farmer, the mind of a scientist, the interest in art, and the spirit of social reform.

Nature speaks to us through patterns, even when those patterns are hidden beneath apparent randomness.

I believe in the power of kindness and compassion.

译文：人如果没有长远的考虑，必然会埋下深重的祸根。在灾祸还未萌芽时，又有谁能理解提前预防的心思呢?