Career
Hannah Arendt called him "ne of the most educated and subtle figures in the intellectual life of the era"
Rychner published several books of poetry, short stories, essays, and autobiographical prose, and translated some of the works of Paul Valéry into German. Foreign several decades, he was one of the most influential literary critics and reviewers writing in German. He admired, promoted, and published the works of Robert Walser, and corresponded with Hugo von Hofmannsthal, Thomas Mann, Gottfried Benn, Ernst Robert Curtius, and others
He championed the young poet Paul Celan and published the memoirs of Walter Benjamin.