ABSTRACT
Nature is under the necessity of diversifying all her works. Elementary matter, different in its essence, must necessarily form different beings, various in their combinations, in their properties, in their modes of action, in their manner of existence. The diversity found among the individuals of the human species, causes inequalities between man and man: this inequality constitutes the support of society. Temperament is, in each individual, the habitual state in which he finds the fluids and the solids of which his body is composed. This temperament varies, by reason of the elements or matter that predominate in him, in consequence of the different Combinations, of the various modifications, which this matter, diversified in itself undergoes in his machine. If all the various faculties attributed to the soul are examined, it will be found that like those of the body they are to be ascribed to physical causes, to which it will be very easy to recur.
