If distinguishing of the Saint Petersburg school of theory and philosophy of law is possible, then its centre will essentially be the reliance on the idea of modern academic research as a phenomenon belonging to post-classical scientific rationality, as well as the accompanying desire to use interdisciplinary methodology in scientific research. Such approaches have from time to time met and continue to meet misunderstanding from some points of view, coupled with a reference to the inadmissibility of introducing legal chimeras. In this article, the authors suggest adhering to an approach that, with a number of reservations, belongs to the philosophy and methodology of common sense, which implies a cautious attitude towards excessive critical aspirations, recalling the importance of paying attention to all positions that meet the minimum procedural criteria of academic consistence, not seeking to “understand too fast”, attempts to find a rational grain and explain why the author adheres to such a concept instead of trying to criticize another view right away and avoiding labeling. The study of the material of the history of legal and political doctrines, according to the authors, indicates the need for a balanced attitude to different points of view, mainly because the principal “users” of law are not scholars themselves, but members of society, not always having specialised knowledge in the field of law, although this consideration, of course, does not deprive academic legal knowledge of its value.