Abstract
The paper deals globally with the history of human and social values from Homer and Hesiod to the end of the fifth century. Special emphasis is given on the moral and social concepts expressed in some fundamental texts of the three major tragic poets. The paper is particularly focused on the significant discrimination between the competitive values, such as wealth and noble origin, and the cooperative ones, expressed in the concepts of justice, wisdom, temperance, modesty, and nobility of character, as well as the respect for the law and the human and political rights, which shaped the development of democracy.