Every political scientist should assimilate and rethink achievements of the sociology of knowledge, even if in a synthetic form if he or she wants to treat his or her work as a scientific activity, and not merely to be an expert or commentator on political tendencies and events. By paying attention to the social origin, and idea crystallization mechanism, – including scientific opinions, methodological schemes – social-economic and ideological entanglements of cognitive processes, sociology of knowledge allows political scientists to distance themselves from their own “politicization”, as well as from their own – colloquial or ideologically conditioned and marked – illusory sense of obviousness of concepts adopted at the starting point. The discipline also deprives those scholars who are likely to identify the duty of objectivity with some mythical “unprejudiced” research. This is because the sociology of knowledge forces us to understand that there are no unbiased studies, and even if they do exist, their colloquial and eclectic character invalidates their scientific value.