"He Himself directs the activities of irrational creatures by providing them with certain irresistible inclinations, so that they necessarily employ their faculties for their proper purpose. The effect of this guidance in animals we call instinct. The bird will infallibly use its wings to fly; the bee is certain to employ its marvelously constructed organs to gather pollen and to make honey. But to man, the most exalted of the living things of earth, God grants freedom of choice in the use of his powers. A human being can direct his faculties of soul and of body to the purposes intended by the Creator, or he can distort them to other ends."