社会学其所以能积极而有效地影响性行为,就在于它已查明哪种两性关系模式最适合社会的需求并符合这些关系发展的客观历史趋势。社会需求和客观历史趋势这些概念本身就表明,光凭个人的意愿和爱好——即便它们在一定程度上能反映上述概念的内容,也不能令人满意地确定性行为的最优模式。正如马克思、恩格斯以及列宁的社会-哲学著作所指出的,问题在于 Sociology, therefore, can positively and effectively affect sexual behavior because it has ascertained which model of gender relations best suits the needs of society and meets the objective historical trends in the development of these relations. The concepts of social needs and objective historical trends show, in and of themselves, that the best mode of sexual behavior can not be satisfactorily defined, even if they reflect to a certain extent the content of the above concepts alone. As the social-philosophical writings of Marx and Engels and Lenin point out, the problem lies in