A story is told about the artist Oskar Kokoschka, who was leading a live drawing class. The students were bored, and doing dull work, so Kokoschka whispered to the model, and told him to collapse to the ground. Kokoschka went over to the prone body, leaned over him, listened to his heart, and pronounced him dead. The class, of course, was deeply shocked. Then the model stood up, and Kokoschka said: “Now draw him as though you were aware he was alive and not dead!” But perhaps drawing someone as if he or she were alive also implies drawing him as if he were dead too, or at least, as if he would one day be dead, like all of us.
James Wood, Serious Noticing, (from here)