In order to clarify this concept we will compare the life process of a human being with that of an animal. Upon birth, an animal is almost completely developed with most of his potential faculties and powers operating at nearly full strength. Most animals are able to fend for themselves relatively soon after birth. Man, by contrast, is born helpless, and only after many years of being cared for and tended, is he able to fend for himself. In addition, the concept of intellectual and spiritual growth has no relation to animals whereas man grows continually in these areas until death.
Animals have no spiritual development.
Their species do not advance or grow in intellect. As animals were thousands of years ago, so they are today. If a monkey is left with a typewriter for a hundred years, he will not produce a single intelligent sentence. Compare and contrast this static existence with the life of man, which is one of perpetual growth of character and pursuit of spiritual goals. An animal has but one goal, to fulfill its immediate desires.