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.
对心灵的研究必须严格经验化。
衣服和食物不是天上掉下来的,是通过辛勤劳动换来的。