From “An Autobiography” by Igor Stravinsky (1936)

“For me, as a creative musician, composition is a daily function that I feel compelled to discharge. I compose because I am made for that and cannot do otherwise. Just as any organ atrophies unless kept in a state of constant activity, so the faculty of composition becomes enfeebled and dulled unless kept up by effort and practice. The uninitiated imagine that one must await inspiration in order to create. That is a mistake. I am far from saying that there is no such thing as inspiration; quite the opposite. It is found as a driving force in every kind of human activity, and is in no wise peculiar to artists. But that force is only brought into action by an effort, and that effort is work. Just as appetite comes by eating, so work brings inspiration, if inspiration is not discernible at the beginning. But it is not simply inspiration that counts; it is the result of inspiration—that is, the composition.”

Stravinsky, Igor (2011-05-24). An Autobiography (Kindle Locations 2169-2175). . Kindle Edition.