Władysław Witwicki

For instance, he worked with Bronisław Bandrowski to develop a model of psychology based on Franz Brentano's theory on phenomenology.

He attributed to Jesus subjectivism, increased sense of his own power and superiority over others, egocentrism and the tendency to subjugate other people,[25] as well as difficulties communicating with the outside world and multiple personality disorder, which made him a schizothymic or even schizophrenic type (according to the Ernst Kretschmer's typology).

[7][26] Witwicki illustrated books (including his own translations), created watercolors, etchings, woodcuts, bookplates.

He designed magazine covers, cast plaster busts, sculpted, reviewed exhibitions, presented artists' profiles.

[29] He lectured and wrote articles about art, and authored textbooks for visual artists: Wiadomości o stylach (About Styles); O widzeniu przedmiotów: Zasady perspektywy (Seeing Objects: Principles of Perspective); Anatomia plastyczna (Plastic Anatomy).