From Upstate by James Wood:
Logically, Nagel was impeccable: if nothing matters, then indeed nothing matters at all, including one’s despair about the fact that nothing matters. But all the same! – how could one, having worked so expertly through the premises of Camus’s eloquent argument in The Myth of Sisyphus, a book she adored, just turn round and calmly ignore those premises? For if nothing matters, then philosophy doesn’t matter, either. The tenured professor from New York University told the uninsured, passionate Frenchman (a heroic figure but not, as Sartre sniffed, much of a philosopher), a man who had lived through the Second World War and the Algerian War, that getting too worked up about the Absurd was a little . . . absurd. Better to be ironic, self-aware, coolly analytical than passionate or despairing.
What is the meaning of "uninsured" in this paragraph?