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.

未来属于科学——属于那些敢于探索的人。

数学的研究是所有智力和精神进步不可或缺的基础。