All mankind... being all equal and independent, no one ought to harm another in his life, health, liberty, or possessions.

Little else is requisite to carry a state to the highest degree of opulence from the lowest barbarism but peace， easy taxes， and a tolerable administration of justice.

You can always juice sales by going down-market, but it's hard to go back upmarket.

数学真理是普遍而永恒的。

每个人都对自己的身体拥有所有权，没有人有权支配他，除了他自己。