Lawrence is best known for his novels Sons and Lovers, The Rainbow, Women in Love and Lady Chatterley's Lover. Within all of these novels, Lawrence contrasts living with existing, within an industrial setting. In particular, he explores the nature of relationships. What is love? Is it physical? Is it emotional? Can you have one without the other? Finally, Lawrence explores the class system and the strange behaviours generated within it. He is a philosopher at heart. The sexual exploits of his characters, although shocking at the time, emphasise Lawrence's belief that society had over-emphasised the place of the mind and forgotten the importance of physical intimacy.