The same causes that prompted the progressive development of our species continue to operate today and provide the impetus for the phylogenetic advancement of our organs, which are still capable of development through adaptation and inheritance. Our cerebral cortex still belongs to the developing parts of our body, at least the anatomical structure supports this conclusion. When I invite you with these lines to take a small walk on terrain that has been traversed many times before, it is with the intention of briefly familiarizing the practical physician with the views regarding the origin and treatment of morphinism, as they have developed based on the experiential material of numerous observers. Throughout this discussion, the opinions of prominent doctors are presented, which aim to prevent such enormous consequences.