Another quality most important in a librarian is an even temper. He should be always and unfailingly courteous, not only to scholars and visitors of high consideration, but to every reader, however humble or ignorant, and to every employee, however subordinate in position. There is nothing which more detracts from one's usefulness than a querulous temper. Its possessor is seldom happy himself, and is the frequent cause of unhappiness in others. Visitors and questions should never be met with a clouded brow. A cheerful "good-morning" goes a great way oftentimes. Many library visitors come in a complaining mood--it may be from long waiting to be served, or from mistake in supplying them with the wrong books, or from errors in charging their accounts, or from some fancied neglect or slight, or from any other cause. The way to meet such ill-humored or offended readers is to gently explain the matter, with that "soft answer which turneth away wrath." Many a foolish and useless altercation may thus be avoided, and the complainant restored to cheerfulness, if not to courtesy; whereas, if the librarian were to meet the case with a sharp or haughty answer, it would probably end without satisfaction on either side. Whatever you do, never permit yourself to be irritable, and resolve never to be irritated. It will make you unhappy, and will breed irritation in others. Cheerfulness under all circumstances, however difficult, is the duty and the interest of the librarian. Thus he will cultivate successfully an obliging disposition, which is a prime requisite to his success with the public and his usefulness as a librarian.