This paper treats of Ignacy Chrzanowski, the outstanding Polish scholar who was professor of the Jagellonian University from 1910 to 1939. The considerations concentrate on two thematic spheres: in the first one the professor is shown as a paragon of an academic educator. The second one treats of the style of his scientific work revealed in lectures and publications. ; The source-material bases mainly on printed or written declarations of Professar Ignacy Chrzanowski's students. It deserves emphasis that the students express their esteem, respect and admiration for their professor, the educator of many illustrious scholars.