Abstract
Judaism in the twentieth century began to return to its scriptural, communal roots after a centuries-long detour through Greek-influenced natural philosophy, a detour during which science and ethics were assumed to be partners and Jewish ethics drew heavily on natural philosophy and science. Twentieth-century philosophical ethics and science, particularly biological science, have developed in such a way as to make any continuation of that historical partnership problematic. This is not altogether regrettable because the problematizing of this long-standing partnership has driven Jewish ethics back to its real roots: covenantal relationship, and moral wisdom and discernment