27 Do not boast about tomorrow, for you do not know what a day may bring. Let another praise you, and not your own mouth; a stranger, and not your own lips. A stone is heavy, and sand is weighty, but a fool's provocation is heavier than both. Wrath is cruel, anger is overwhelming, but who can stand before jealousy? Better is open rebuke than hidden love. Faithful are the wounds of a friend; profuse are the kisses of an enemy. One who is full loathes honey, but to one who is hungry everything bitter is sweet.