Ellen Gamerman interviews painter Alex Katz whose work is on view at Gavin Brown's Enterprise, New York, through June 13, 2015.

Gamerman begins: "One morning. That’s how long it takes Alex Katz to start—and finish—a painting. This high-speed routine has repeated itself many mornings, for many years. Such remarkable productivity would be a feat for any artist, but especially an 87-year-old whose towering pictures demand exacting brushwork across canvases that span entire walls."