He obtained his first editorial position at the Stuttgarter Chronik, then worked for the Stuttgarter Neues Tagblatt; from 1880 he was employed as a permanent contributor to the Berliner Tageblatt and the Tribüne, from 1884 to 1887 he was, alongside Oscar Blumenthal Feuilletonredakteur and theatre editor of the Berliner Tageblatt.
[1][2] He made significant contributions to research in literary history (Goethe, Schiller, Kleist, Maler Müller, Karl Philipp Moritz among others).
(Zobeltitz) His extensive library was catalogued after his death, given as a bequest to the Staatsbibliothek zu Berlin by his brother, the building councillor Herman Weisstein, in 1923 and looked after there as a librarian by Hans Lindau, a son of Weisstein's friend Paul Lindau.
After Herman's death in 1924, his widow Margarethe Weisstein (possibly already under the impression of increasing anti-Jewish repression) had the books sold by the antiquarian bookseller Martin Breslauer in 1933.
A small part of the collection was bought back by the State Library with funds from the Notgemeinschaft der Deutschen Wissenschaft, and another 700 books on theatre history were purchased by the Clara Ziegler Foundation (today the Deutsches Theatermuseum).