A person who is too nice an observer of the business of the crowd, like one who is too curious in observing the labor of bees, will often be stung for his curiosity.

自然不作飞跃。（拉丁文，指自然界的演变是连续的而非跳跃的）

这不应该是一件容易的事。任何觉得容易的人都是愚蠢的。