An often surprising discussion of trade-offs and freedom, and of the dangers of ideologizing ecology. RD: "As I have thought about environments in this country that have been the most productive with regard to the percentage of distinguished people, of interesting people, that have emerged from them, I have always felt that the best environment that ever existed ... was the small farm, the operating family farm.... one has the wealth of stimuli that comes from an extremely diversified environment." ... JB: "I prefer clean water to polluted water and cleaner air to smog-bound air, but on the other hand, it really always is a question of how clean ... For instance, to get it perfectly clean, that last bit-you can't get it perfectly clean, but to go from 99.2 per cent clean to 99.7 per cent clean, I understand ... costs more than to bring it up to 99.2 per cent. Now is that worth it or not? I don't know."