The aim of the paper is to give a reconstruction of the constitutive theses of cognitive relativism. The premises of the authoress' reconstruction are some examples of well-known theses and statements that are conceived to be relativistic. She distinguishes three constituents of cognitive relativism: 1) the thesis of constructive character of cognition, 2) the thesis of pluralism of cognitive schemes, 3) the thesis of incommensurability of cognitive schemes. The article aims also at, first, proving that Quine' philosophical standpoint is not relativistic as it clashes with the third thesis of relativism. Secondly, the authoress tries to argue that a relativist may avoid the consequence of agnosticism but, which is not surprising, he/she has to radically reject the idea of the objective truth as the purpose of our cognition.