Jan Alfred Szczepański's "Jaszcz" (1902–1991) literature output concerning mountain themes Authenticity characterizes J.A. Szczepanski's mountain writing. It does not mean, however, the authenticity exemplified in other pieces of so-called 'alpine literature', which is sometimes schematic, and in the consequence boring, with its chronological description of climbing techniques or camping reports. Jaszcz often discontinued that realistic pattern of description of the climbing routes in the Tatras, 'he consciously quitted the naturalistic reconstruction of the topographic and technical details of climbing descriptions'. He tried to show the truth about a human being and 'the essence of his or her relation to the mountains, the genuine reaction to the mountains and climbing'. He did it in a very suggestive mode, both lyric and reflexive, using the words and metaphors characteristic for him. In his prose, he pointed to 'the esthetic and cognitive values of alpinism, perfectly harmonized with its sportive values', and his books are considered as a bridge between the Polish mountain writers in the period between the wars 1918–1939, for instance W. Birkenmajer and W. Stanisławski, and the young writers after the Second World War, with J. Dlugosz and A. Skoczylas among others.