According to it apud FOSTER, 2005:58 if the law ' ' not to finish for taking advantage in the relations of men ones with outros' ' , to cease to be mild with its general concept, if to leave to be satisfied the material circumstances, ' ' then it does not have more the essential nature of justia' '. What it can perceive is that this ' ' nature essencial' ' of justice she was not very clear in the practical ones of the social relations, what for this, has been the interests of ones on the others. The idea of the individualizao of the natural wealth, was responsible for great part of the system of social disequilibrium. Disequilibrium this that at other moments had not been so widely unbalanced in comparison to the capitalist system. Another one illustrious thinker whom it used of the materialism for the development of its thought was Charles Darwin (1808-1882).
Its theory on the evolution of the Darwin species it believed that all the creatures would be fruit of a long natural process of evolution, also the man, and that this process would not be in the end of its evolutiva scale. (FOSTER) For Darwin if the human beings if extinguished would appear then new species to complete the ecological niche. Darwin believed that the materialism would not mean one necessarily atesmo, however Darwin censured its materialistic ideas of conception of the reality. As one becomes to perceive in its you write down: (apud FOSTER, 2005:51) ' ' Being the hereditary thought it is difficult to imagine it as being any thing beyond the hereditary structure of the brain ah! its materialist! ' '. In century XVIII the brain already was had as responsible agency to all the mental facultieses. It can be concluded that the thought of Darwin also represented an attack the religious society, and this age something that caused concerns to the thinker.