 Two other paradoxes of naive set theory are usually mentioned, the paradox of Burali-Forti (1897)—which has historical precedence—and the paradox of Cantor. To review these other paradoxes is a convenient way to review as well what the early set theorists were up to, so we will do it. Our formal presentation of these paradoxes is anachronistic; we are interested in their mathematical content, but not necessarily in the exact way that they were originally presented.