我不是一个回头看的人，我总是向前看。

解释：局势安定的国家，常常是富足的；局势 动乱的国家，常常是贫穷的。

The past is a foreign country; they do things differently there.

Law is a system of rules, a union of primary rules of obligation and secondary rules of recognition, change, and adjudication.

We are all in the gutter, but some of us are looking at the stars.

The arithmetic of L-functions is a key to unlocking the secrets of the universe.