For nonfiction along these lines I would recommend reading Arthur Schopenhauer, Albert Camus, Friedrich Nietzsche, Alexander Solzhenitsyn, but most of all Primo

For nonfiction along these lines I would recommend reading Arthur Schopenhauer, Albert Camus, Friedrich Nietzsche, Alexander Solzhenitsyn, but most of all Primo Levi. And for fiction it wouldn't hurt to add Fyodor Dostoevsky, Jose Saramago, and Gabriel Garcia Marquez as well.