The founders of a new colony, whatever Utopia of human virtue and happiness they might originally project, have invariably recognized it among their earliest practical necessities to allot a portion of the virgin soil as a cemetery, and another portion as the site of a prison.

成功不是拥有的，它是租来的，而且每天都要付租金。

成功的关键不仅在于制造产品，还在于理解使用它的人。