Every human being has an attribute peculiar to his nafs. One is tiger-like, another resembles a dog, while a third may be like a cat, and a fourth like a fox. In this way man shows in his speech, thoughts and feelings the beasts and birds, and the condition of his nafs is akin to their nature; at times his very appearance resembles them. Therefore his tendency to harmony depends upon the evolution of his nafs. As man begins to see clearly through human life, the world begins to appear as a forest to him, filled with wild animals, fighting, killing and preying upon one another.