Cf: From hearing comes wisdom (Br.). Не is a wise man (wise) who speaks little (Am.). Не knows most who speaks least (Am., Br.). Не knows much who knows how to hold his tongue (Br.). A still mouth makes a wise head (Am.). A still tongue makes a wise head (Am., Br.)
Русско-английский словарь пословиц и поговорок. Академик.ру. 2013.