"As new methods of investigation become available to us, levels of analysis can be conducted: nuances undreamed of by , , , even . Science had advanced, but human behavior has not. People still hunt gorillas for food or trophies, and still cut down their forests; but now those same advances in science also enable forests to be cut down more efficiently, gorillas to be hunted more efficiently, human populations to increase ever faster and press in on the remaining habitat, so that our second-closest relative is threatened with disappearing for ever. More and more, the work of taxonomists and other biologists must be put into the service of conservation."