Art has a shape.

"One thing that makes art different from life is that in art things have a shape; they have beginnings, middles, and endings. Whereas in life, things just drift along. In life, somebody has a cold, and you treat it as insignificant, and suddenly they die. Or they have a heart attack, and you are sodden with grief until they recover to live for thirty petulant years, demanding you wait on them.