Proverbs 11:12 in the World English Bible
One who despises his neighbor is void of wisdom, but a man of understanding holds his peace.
Context
11 By the blessing of the upright the city is exalted: but it is overthrown by the mouth of the wicked.
12 He that is void of wisdom despiseth his neighbour: but a man of understanding holdeth his peace.
13 A talebearer revealeth secrets: but he that is of a faithful spirit concealeth the matter.