Effective nature conservation requires maintenance of stable ecosystems. Because animals and plants are necessary for stability, humans must recognize that they have a responsibility to support other species and must learn to respect them. Had we learned respect a few, or even a single century ago, today there would be far fewer humans, there would be no invasive species problems, there would be no polluted air and water, there would be no deforestation for livestock and crops, and there would be no soil erosion.