1939-2004 ethnologist, museum professional, museologist, senior curator, born in Warsaw and he was connected with this city during his whole life, here he graduated in the field of ethnology at the University of Warsaw. In 1962 he joined the National Ethnographic Museum in Warsaw (then the Museum of Folk Culture and Art), where he worked until the end of his life. Within the structure of museum he dealt with the collection of basic and craft economy, but the range of his interests included wider understood "folklore" or according to Robotycki - folk culture and its manifestations in the present day.
In the years 1967-1990 (to the change of the museum structure and the integration of distributed departments in one - the Department of Ethnography of Poland and Europe) worked as the head of the Department of Basic Economy and Crafts.
He is the author of numerous exhibitions and ethnographic films.
As a fieldworker, who acquires folk artifacts from the past but also the present - in order to build museum collections - it was important to enclose things in context. Szacki prepared also the full documentation: photos, interviews with the creators-artisans and users, and videos presenting craft techniques.
To understand things means also know how they were created. Theory and practice should go in one row. Things were evidences of a certain reality [S. Sikora]. Szacki wanted to know about these things as much as possible, he wanted to know them through and through.
Szacki very carefully chose research subjects and objects that have a potential to become museum collections. He wrote about the situation of the inclusion of an object to the collection: "This act in all its complexity, is the result of reason and sensibility, reflex of knowledge and intuition." He was interested in folk craft, technological processes, the existence of things in cultural circulation. An object was important for him as a product of human hands and tools coupled with them. Also creator's knowledge was essential for him.
Peter was fascinated by things. He knew how to tell about them, but also to ask them questions that they could not answer. [With Sokolewicz].
Natural materials (wood, clay, vegetable flagella, iron), a form that was given by man intentionally by using tools; creator and then recipient, living with man, and their joint biography - this is the crux of Szacki`s interests, which he translated to the museum iconosphere in his scientific activity, during building the collections, its classifications and description.
Despite the fact that Peter Szacki dealt with things in the museum: Such underlining of the emphasis placed on things themselves may lead to confusion and distortion, although Peter dealt with the things but the guiding value for him always was a man, and this statement applies both to his work and life. [S. Sikora].