no one would regards you as mute if you just be quite,这句话regards为什么有"s",还有从句中为啥是be

问题描述:

no one would regards you as mute if you just be quite,这句话regards为什么有"s",还有从句中为啥是be
这句是从一本书上摘下来的,我确定没有抄错,所以regards是不是印刷错误呢,还是有什么特别用法,
我看到书上的翻译是“你不说话没有人把你当哑巴”

“It is better to be silent and be thought dumb,than to speak and remove all doubt!”