About the book: 2006 / This publication is compiled from pre-revolutionary translations of Paul Natorp. However, it did not include (due to the limited volume of the publication) a number of other existing Russian translations. The most important of them is the already mentioned “Social pedagogy”. A book about Pestalozzi and a work on the logical foundation of mathematics and mathematical natural science were also translated into Russian. The best introduction to the circle of ideas of the Marburg neo-Kantians in Russian is still, in our opinion, the corresponding section in the cited book of the Georgian philosopher Konstantin Spiridonovich Bakradze. From German sources we can recommend a general work on neo-Kantianism by Hans Ludwig Ohlig, and among significant historical studies - the book by Klaus Christin Köhnke on the emergence of neo-Kantianism.