In 1927, Franciszek Siedlecki published his work entitled Grafika polska w oewietle krytyki zagranicznej [Polish etching graphics in the light of foreign criticism]. In his essay, he proposed a metaphorical conception of etching graphics, defined as a philosophical path towards enlightenment. Siedlecki considered Rembrandt to be the ideal embodiment of his philosophy. Siedlecki was one of contributors to the collective volume published in 1938, entitled Feliks Jabłczynski (1865-1928). Monografia zbiorowa [Feliks Jabłczynski (1865-1928). A collective monograph]. In his essay there (Grafika Feliksa Jabłczynskiego (1865-1928)[Etching graphics by Feliks Jabłczynski (1865-1928)]), he presented his model of a prototypical master of acquaforte etc...