Obj. 3: Further, men are praised with the lips that they may be encouraged to do better: since just as being praised makes the wicked proud, so does it incite the good to better things.
 Thomas Aquinas, Summa Theologica (1274). copy citation

add
Author Thomas Aquinas
Source Summa Theologica
Topic praise lips
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/18755/pg18755-images.html

Context

“Now God is worshiped with the mind rather than with the lips: wherefore our Lord quoted against certain ones the words of Isa. 29:13, "This people.. . honors [Vulg.: 'glorifies'] Me with their lips, but their heart is far from Me." Therefore the praise of God lies in the heart rather than on the lips.
Obj. 3: Further, men are praised with the lips that they may be encouraged to do better: since just as being praised makes the wicked proud, so does it incite the good to better things. Wherefore it is written (Prov. 27:21) : "As silver is tried in the fining-pot.. . so a man is tried by the mouth of him that praiseth." But God is not incited to better things by man's words, both because He is unchangeable, and because He is supremely good, and it is not possible for Him to grow better.” source