In his new book, Richard M. Lerner is determined that the lessons learned from biology's shameful involvement in the horrors of Nazi genocidal programs must not be lost and that the hateful doctrine of biological determinism never again be permitted to justify oppression, inhumanity, and ultimately mass murder. Such vigilance is essential now, because he believes that the ideology of biological determinism has indeed been resurrected, this time in the guise of sociobiology, and that it too may well be used for "politically pernicious, fascist purposes"