 Peers such as L. Sprague de Camp and Damon Knight have commented critically on Heinlein's portrayal of incest and pedophilia in a lighthearted and even approving manner.However, Heinlein's intent seems more to provoke the reader and to question sexual mores than to promote any particular sexual agenda.In "To Sail Beyond the Sunset", Heinlein has the main character, Maureen, state that the purpose of metaphysics is to ask questions