Both Musonius and Seneca criticized the double standard, cultural and legal, that granted Roman men greater sexual freedom than women. Men, Musonius argues, are excused by society for resorting to prostitutes and slaves to satisfy their sexual appetites, while such behavior from a woman would not be tolerated; therefore, if men presume to exercise authority over women because they believe themselves to have greater self-control, they ought to be able to manage their sex drive. The argument, then, is not that sexual freedom is a human good, but that men as well as women should exercise sexual restraint. A man visiting a prostitute does harm to himself by lacking self-discipline; disrespect for his wife and her expectations of fidelity would not be at issue. Similarly, a man should not be so self-indulgent as to exploit a female slave sexually; however, her right not to be used is not a motive for his restraint. Musonius maintained that even within marriage, sex should be undertaken as an expression of affection and for procreation, and not for "bare pleasure".