Expulsion from the Garden of Eden
Ślewiński's philosophy of art seems to stem from an excerpted statement of his about Gauguin: "He is so much an artist that he has to be wholly accepted or else rejected. I can feel him and accept him totally, for he suits my ideas of art and beauty". Beginning with his early works, he simplified forms and painted in flat areas. He encircled areas with contours, though he sometimes blended color into color. While he sometimes verged on abstraction, his lighting never departed completely from direct observation of nature. His approach to so-called subjective color was similar, as can be seen in some of the landscapes from the Tatra Mountains.
Perhaps more important for Ślewiński than the selective application of synthetism was his search – inspired by Gauguin – for simplicity and sincerity in places untouched by modern civilization as well as in objects of daily use. In his art, Ślewiński concentrated on the object, infusing its materiality with the reflective sensitivity of a painter. The form and color determined the painting's atmosphere. The artist used mainly earth colors, sometimes enlivened with stronger accents. He employed a repertoire of forms with curving contours, and painted without a drawn sketch, as was characteristic of the epoch.