In Sinclair Lewis's book "Main Street," the author critiques the notion that the physical landscape of America, such as vast plains and towering mountains, shapes the character and aspirations of its people. This idea suggests that geographical features are directly related to open-mindedness and noble ambitions, a belief that has become an ingrained myth in American culture.

Lewis challenges this perspective by implying that personal development and purpose are not solely determined by one's environment. He invites readers to reconsider how the complexities of human experience and individual choices play a more significant role in shaping values and aspirations than mere geographical attributes.