In the portrayal of the slave as a victim, the historian Stanley M. Elkins in his 1959 work "Slavery: A Problem in American Institutional and Intellectual Life" compared the effects of United States slavery to that resulting from the brutality of the Nazi concentration camps. He stated the institution destroyed the will of the slave, creating an "emasculated, docile Sambo" who identified totally with the owner. Elkins' thesis was challenged by historians. Gradually historians recognized that in addition to the effects of the owner-slave relationship, slaves did not live in a "totally closed environment but rather in one that permitted the emergence of enormous variety and allowed slaves to pursue important relationships with persons other than their master, including those to be found in their families, churches and communities."