David Wiesner, illustrator, author, and 3-time Caldecott Medal-winner, talks to Giuseppe Castellano about the path that led him to wordless picture books; how Maurice Sendak, James Marshall, Trina Schart Hyman, and other legends helped David feel like he “belonged”; how an “unplanned moment” led to his Caldecott-winning, Tuesday; what it was like to get the “Caldecott Call”; why the pictures in picture books matter; and so much more.