Born in Sierpc in 1873 or 1875. A painter and graphic artist, he died in the Krakow ghetto in 1942. The son of a writer, he spent his early years on a forest estate.

In 1892, he went to Warsaw to study painting. Influenced by Hirszenberg, he decided to study in Krakow's Academy of Fine Arts under Jacek M. Stanislawski, Leon Wyczolkowski and Jan Stanislawski. Neuman went to winter plein airs in with Stanislawski, who had a large influence on the artist.

In 1903, he studied in Paris at the Academie Julian. At that time, he also visited England, Holland, Belgium and Germany. In addition, he also spent time in Palestine, and in the United States, where he also travelled after the First World War. In the years 1925-1927, he served as a lecturer at the Becalel School of Artistic
Crafts in Jerusalem. In 1909, he took part in a plein air at the Kierbedziow estate in Rybiniszki in the Polish Inflanty [eastern Latvia]. He lived in Vienna and Krakow.

He painted landscapes from the Tatra Mountains, Kazimierz Dolny, Brittany, Palestine, portraits and still lifes. He was the first Jewish painter from Poland to go to Palestine in 1904, and also the first to encounter the new challenges that painting there posed, including the different kind of light. He struggled to solve these problems for a long time, and by his second stay in Palestine, Palestinian themes had already become a permanent feature of his work.