acquaintance, n.: A person whom we know well enough to borrow from, but not well enough to lend to. Ambrose Bierce
To look forward and not back, To look out and not in, and To lend a hand. Edward Everett Hale
The holy passion of Friendship is of so sweet and steady and loyal and enduring a nature that it will last through a whole lifetime, if not asked to lend money. Mark Twain
To lend is to buy a quarrel. Hindi Proverb
It is safe to lend barley to him who has oats. Danish Proverb
To lend your hatchet and get your forest cut down. Japanese Proverb