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"You know the tree by its fruit."

"Stolen fruit is the sweetest. (Strauss, 1994 p. 835)"

"When thy friend asks, let there be no to-morrow."

"Our friends are our mirrors and show us ourselves."

"No longer foster, no longer friend."

"It is good to have some friends both in heaven and hell. (1640)"

"It is a good friend that is always giving, though it be never so little."

"If you want enemies excel others, if you want friends let others excel you."

"He is my friend that succoreth me, not he that pitieth me."

"Friends, Romans, countrymen, lend me your ears! (William Shakespeare)"

"Friends are thieves of time. (17th century)"

"Friends are lost by calling often and calling seldom."

"False friends are worse than open enemies."

"Do not use a hatchet to remove a fly from your friend’s forehead."

"Bought friends are not friends indeed."

"Be a friend to thyself, and others will befriend thee."

"A reconciled friend is a double enemy."

"A true friend does sometime venture to be offensive."

"A good friend never offends."

"A friend cannot be known in prosperity nor an enemy be hidden in adversity."

"The fox, when he cannot reach the grapes, says they are not ripe."

"Set the fox to mind the geese."

"Fire, quoth the fox, when he pissed on the ice."

"If fortune favours, beware of being exalted; if fortune thunders, beware of being overwhelmed."

"To err is human, to forgive divine. (Alexander Pope)"

"Forgive and forget."

"Forewarned, forearmed."

"A wise man changes his mind, but a fool never does."

"There's no fool like an old fool. (1546)"

"The last fool never dies. (14th century)"

"A tongue of a fool carves a piece of his heart to all sit near him. (Strauss, 1994 p. 136)"

"Natural folly is bad enough, but learned folly is intolerable. (1732)"

"If the fool would persist in his folly he would become wise. (William Blake)"

"He that leaves certainty and sticks to chance, When fools pipe, he may dance."

"He is a fool that forgets himself. (14th century)"

"Fool me once, shame on you. Fool me twice, shame on me."

"Every fool is pleased with his own folly."

"The first chapter of fools is to think themselves wise. (Strauss, 1994 p. 879)"

"Better to remain silent and be thought a fool, than to open your mouth and remove all doubt."

"A fool sees not the same tree that a wise man sees. (William Blake)"

"A fool is ever laughing."

"You can catch more flies with a drop of honey than with a barrel of vinegar."

"Say it with flowers. (Patrick O'Keefe)"

"Go with the flow."

"If you got it, flaunt it."

"There are as good fish in the sea as ever were caught."

"All is fish that comes to the net."

"There is no smoke without fire. (15th century, Citatboken)"

"No fire without some smoke. (1546)"

"Fight fire with fire."