Tracing The Evolution of Philosophical and Neurohormonal Origins of the Expression of Love in Vertebrates From Fish to Human: A Review
Dr. Sofronios E. Papoutsoglou

Abstract
Basing on humans’ gradually development and understanding the existence of Love as well as on the theory of evolution of animal species, the aim of the present study, has been focused on the neurohormonal origins of Love as they arise in vertebrates’ origin (fish) and in their present stage (humans). Starting from the most ancient humans’ approach, related to the way of the creation of feelings and meanings of Love, the development of its philosophical-historical and religion expressions and definitions have been outlined and highlighted. However, more specifically, the biological sequence and the language of Love, defined by the presently available data concerning the involvement of molecules of neuroendocrinological action in both fish and humans, have been examined from the mating-reproduction, friendship-social behavior and altruism points of view.

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