"Human beings also kill animals not just for food. They take the animals' skin to make shoes and hats and clothes. And even that is not enough. They take these animals' bones to make necklaces or buttons or earrings. In short, they kill many, many animals in order to sell the animal parts for money. Because of these desires and this strong animal consciousness, human beings fight with each other, and destroy nature. They do not value life. So now this whole world has many problems; problems with the water, problems with the air, problems with the earth and food. Many new problems appear every day. These problems do not happen by accident. Human beings make each and every one of these problems. Dogs, cats, or lions, or snakes - no animal makes as many problems for this world as human beings do. Humans do not understand their true nature, so they use their thinking and desire to create so much suffering for this world. That is why some people say that human beings are the number one bad animal in this world. So human beings must soon wake up and find their original seeds, their original nature."

~ Zen Master Seung Sahn
The Compass of Zen