"True friends are precious and rare."

"False friends are dead leaves found everywhere"

"A false friend is worse than a true enemy"

"A faithless friend is sharper than an adder's tooth."

"You'll find the friendship of the world a show!
Mere outward show! 'Tis like the harlot's tears,
The statesman's promise, or false patriot's zeal,
Full of fair seeming, but delusion all."

"There is a friend that sticketh closer than a brother."—Proverbs 18:24.