Perhaps one reason the debate about embryonic stem cells has become so prominent is that it combines scientific optimism and scientific despair so completely: the optimistic search for cures, the discontent that nature yields remedies for her afflictions so slowly, the resentment at Bush-administration moralists for standing in the way of scientific progress for nonscientific reasons. The greatest animus among scientists is directed at religious believers, often defined as anyone who seeks limits on scientific freedom for ethical reasons the scientists themselves do not find compelling. The deans of major research centers feel like persecuted Galileos, yet they defend their turf in the most unscientific ways: treating the paralyzed as props in the campaign for research funding, promising cures based only on preliminary experiments, caricaturing every opponent as an irrational fanatic.--Eric Cohen cf. Secondhand Smoke
For it turns out that the methods of science cannot vindicate the ends of science, and the knowledge acquired by scientific methods cannot always justify the particular experiments used to acquire it.