oa Philipp Abraham Kohnstamm en de serie ‘Psychologie van het ongeloof’ (1933-1939)

From 1933 to 1939 a series of eight books was published, titled ‘Psychologie van het ongeloof’ (psychology of unbelief). This article pays attention to Ph.A. Kohnstamm, the initiator and editor of this series, and gives an overview of his religious and scientific development. Kohnstamm was a scientist who converted to Christianity. He developed a Biblical personalism and focused on pedagogy in his later life. This article deals with the genesis of this series on this modern subject, and gives a description of the different authors – from various religious backgrounds and sometimes friends of Kohnstamm – and the contents of each issue, of which H.C. Rümke’s on the relation of character and predisposition to unbelief became famous. Kohnstamm wrote a general introduction to the series. Arie Molendijk questions the psychological character of the series and qualifies the series overall as apologetic.