Proverbs 23:7
“For as he thinketh in his heart, so is he: Eat and drink, saith he to thee; but his heart is not with thee.”
Wilt thou set thine eyes upon that which is not? for riches certainly make themselves wings; they fly away as an eagle toward heaven.
Eat thou not the bread of him that hath an evil eye, neither desire thou his dainty meats:
For as he thinketh in his heart, so is he: Eat and drink, saith he to thee; but his heart is not with thee.
The morsel which thou hast eaten shalt thou vomit up, and lose thy sweet words.
Speak not in the ears of a fool: for he will despise the wisdom of thy words.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Related Verses
“As in water face answereth to face, so the heart of man to man.”
“When thou sittest to eat with a ruler, consider diligently what is before thee:”
“The lips of the wise disperse knowledge: but the heart of the foolish doeth not so.”
“Thine eyes shall behold strange women, and thine heart shall utter perverse things.”
“When he speaketh fair, believe him not: for there are seven abominations in his heart.”