Professor Leszek Nowak was a co-founder of the Poznań School of Methodology and an author of seven original scientific theories with a wide reach: the concept of an excellent lawmaker in the methodology of law, the idealizational theory of science in the philosophy of science, the adaptive reconstruction of Marxian historical materialism, a categorial interpretation of Marx and Engels's dialectics, non-Marxian historical materialism in the philosophy of history, non-Christian model of man in philosophical anthropology, and negativistic unitarian metaphysics. During his scientific career, Nowak wrote 28 books1, edited 21 joint publications, and authored about 600