For those seeking an overview of the religious traditions of Judaism and contemporary Jewish self-understanding, Jonathan Magonet's knowledgeable introduction offers enlightening reading. Starting from the song "Eins - who knows it?", which is sung at the end of the holiday liturgy during the home Passover celebration and contains the key elements of Judaism, Jonathan Magonet, one of the leading figures of liberal Judaism in Europe, unfolds the most significant Jewish beliefs and paints a multifaceted picture of Judaism in both tradition and modernity.