【释义】喜欢高谈阔论的人，会因为说话太多而失言。【延伸】祸从口出，言多必失，话太多的人，说得越多，往往错的就越多，而且，没有人会喜欢一个多嘴多舌的人。会说话是好事，要讲分寸，说过头了，还不如不说。

I think prime numbers are like life. They are very logical but you could never work out the rules, even if you spent all your time thinking about them.