法律体系是根据其自身的有效性标准而有效的规则体系。
A legal system is a system of rules which are valid according to the system's own criteria of validity.
我从不考虑过去,我总是考虑下一场比赛。
The best way to be happy is to live in the moment.
数学家沉浸在他的符号洪流中,表面上处理纯粹的形式真理,仍然可能得出对我们描述物理宇宙具有无尽重要性的结果。
I don’t need anyone to complete me.