In Joseph J. Ellis's "Revolutionary Summer: The Birth of American Independence," the contrasting physical and psychological traits of two historical figures, Dickinson and Adams, are highlighted. Dickinson is described as tall and gaunt, with a pale complexion, which reflects his different social and personal demeanor compared to Adams. His presence exudes a sense of confidence that stems from his elite Quaker background and legal education in London.

This description illustrates how outward appearances and ingrained social structures influenced the personalities and interactions of key figures during America's revolutionary period. Dickinson's deliberate manner suggests a composed and confident individual whose background informs his approach to leadership and independence, setting him apart from the more fiery and determined character of Adams.