“We are nowadays surprised to find that such an official bit of work, made "to order" by a court poet for a special occasion, should be good poetry. But in ages when the arts had their full health, no one would have understood our surprise. All the great poets, painters, and musicians of old could produce great work "to order." One who could not would have seemed as great a humbug as a captain who could navigate or a farmer who could farm only when the fit took him.”
C.S. Lewis--Reflections on the Psalms (Chapter 12)