One should proceed with caution. We may simply not be wise enough to do some of the kinds of engineering things that people are talking about doing.

Leon R. While biotechnology offers great promise for health care it has applications for "many other ends good ones and bad. Kass places "special value on the natural human cycle of birth procreation and death" and views death as a "necessary and desirable end" and the human and human aspirations that are derived from it.

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Kass is currently the Addie Clark Harding Professor in the College and the Committee on Social Thought at the University of Chicago and the Hertog Fellow at the American Enterprise Institute. His books include Toward A More Natural Science: Biology and Human Affairs; The Hungry Soul: Eating and the Perfecting of our Nature; Life Liberty and the Defense of Dignity: The Challenge for Bioethics; The Beginning of Wisdom: Reading Genesis; and What So Proudly We Hail: The American Soul in Story Speech and Song.