法律不是规则的体系，而是主要规则和次要规则的结合。
Law is not a system of rules, but a union of primary and secondary rules.
The only thing I really like is change.
最强大的人永远不足以始终成为主宰，除非他将力量转化为权利，将服从转化为义务。
The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.
常识并不常见。
Hate the sin, love the sinner.