en_tn_lite_do_not_use/pro/15/02.md

The tongue of wise people compliments knowledge

Here the word "tongue" refers to the person who speaks. Alternate translation: "Wise people compliment knowledge when they speak" (See: rc://en/ta/man/jit/figs-synecdoche)

compliments knowledge

Possible meanings are 1) "makes knowledge attractive" or 2) "uses knowledge correctly."

the mouth of fools pours out folly

The writer speaks of fools' mouths as if they were containers and of folly as if it were the liquid that filled them. When fools speak, their mouths pour out the liquid. The word "mouth" represents those who speak. Alternate translation: "fools are always speaking folly" (See: rc://en/ta/man/jit/figs-metaphor and rc://en/ta/man/jit/figs-synecdoche)