Ancestry, to Roger W. Babson, was a primary factor in determining the course of an individual’s life. He acknowledged the importance of environmental influences, but regarded environment as clearly secondary to heredity, going so far as to argue that heredity as reflected in the accomplishments of ancestors largely determined the environment into which a child was born. Babson’s lifelong interest in genealogy was, consequently, more than a hobby; it was an effort to discover his own potential, to identify weaknesses to be overcome and strengths to be used. Not only should one study his own genealogy, he argued, but also the ancestry of one’s future spouse, out of regard for the fate of descendants. And he advocated particular attention to ancestry in choosing a vocation in order to find the kind of work for which one is best fitted; successful businessmen, he argued, are born rather than made, and many of the ills of individual and society as a whole are due to making the wrong career choice.