Volume I: In order to demonstrate not what jurists should do but what they do in reality, lies the characteristic of legal realism. In any case, the words ""real"", ""reality"" or ""realism"" are used in opposition to what in the modern science of law arises as pure fantasy, doctrinal ramblings or romantic tendency to forget that essentially this depends on its effective Realization, not everything that can be affirmed on paper. Volume II: In opposition to ""romanticism"", ""fantasies"", ""beautification"" and ""wishful thinking"", realism is used in the label ""legal realism"". Realistic orientations share a negative feature: their skepticism in relation to some of the conventional legal theories.