法律体系的存在取决于官员对次要规则的接受。
想让小孩子在旅行中表现良好，可以准备一袋他们喜欢的糖果，当他/她不乖时，就向窗外扔掉一块糖。
It will take about a thousand million million million million years for the Earth to run into the sun, so there’s no immediate cause for worry!
The work of art is a question, not an answer.
The Milky Way’s black hole is our closest laboratory for studying extreme gravity.
