The animal has much more the gift of expression than the plant or the rock, and we feel that animals are much nearer to us. The dog by wagging his tall, by jumping about, by every movement says, I love you" and we care much more for him. We do not want the plant on the chair next to us, but if the dog sits on the chair it is all right. The cat has no words, but by its voice it speaks to us. All the poets of the East have spoken of the nightingale because of its voice, its expression. There are many birds in the forests of which we never think because they have no voice, but the song-birds we all know and we like to have a parrot because it speaks. Allah has made man the khalifa, the chief of creation for this one thing, his tongue: man alone has the gift of eloquence.