 Popper takes Michelangelo’s sculpture The Dying Slave as an illustrative example of a world 3 object, embodied in a world 1 block of marble. Other examples given include memory engrams in the brain, the American Constitution, Shakespeare’s tragedies, Beethoven’s Fifth Symphony and Newton’s theory of gravitation. Each one of these, he contends, is a world 3 object that transcends both its physical, world 1 embodiments and its world 2 cognitive origins (1980: 145).