If Not Now, When? is a novel by the Italian author Primo Levi, first published in 1982 under the title Se non ora, quando?
The title is taken from a well-known rabbinical saying attributed to Hillel the Elder: "If I am not for myself, who will be for me? And when I am for myself, what am 'I'? And if not now, when?" (see also Pirkei Avot).
The story follows a number of Jewish partisans and resistance fighters as they struggle to survive and sabotage the German war machine behind Nazi lines durin...