I am very troubled by this horrible issue of "who is a Jew?" I'm very simplistic about it. I ask, if Hitler were here, would he consider me a Jew? And of course he'd say yes, and that's the end of that. If we were all in line to go to Auschwitz, would the Orthodox pull us out of line and say, "You're not a Jew"?
Hasdai Crescas
