title: Emotion as an explanatory principle in early evolutionary theory.
authors.affiliation: Department of Philosophy, Queen's University, Kingston, Ontario, Canada.
authors.forename: S
authors.initials: S
authors.lastname: Campbell
mesh_terms: D005075:Biological Evolution; D004644:Emotions; D049672:History, 19th Century; D049673:History, 20th Century; D006113:United Kingdom; D014481:United States