. "Famous critics have striven to define and assess the work of Arthur Koestler, a remarkable figure of twentieth century life and letters."@en . . "Famous critics have striven to define and assess the work of Arthur Koestler, a remarkable figure of twentieth century life and letters." . "Arthur Koestler a collection of critical essays"@en . . "Criticism, interpretation, etc"@en . "Criticism, interpretation, etc" . . . . . . . . . . "Arthur Koestler : a collection of critical essays" . . . . "Aufsatzsammlung" . . .