For as he thinketh in his heart, so is he: Eat and drink, saith he to thee; but his heart is not with thee.
Proverbs 23:7
King James Version (public domain)
Traditionally attributed to Solomon · c. 10th century BC · King of Israel, renowned for wisdom
Context
5Wilt thou set thine eyes upon that which is not? for riches certainly make themselves wings; they fly away as an eagle toward heaven.
6Eat thou not the bread of him that hath an evil eye, neither desire thou his dainty meats:
7For as he thinketh in his heart, so is he: Eat and drink, saith he to thee; but his heart is not with thee.
8The morsel which thou hast eaten shalt thou vomit up, and lose thy sweet words.
9Speak not in the ears of a fool: for he will despise the wisdom of thy words.