Know thou that every soul is fashioned after the nature of God, each being pure and holy at his birth. Afterwards, however, the individuals will vary according to what they acquire of virtues or vices in this world. Although all existent beings are in their very nature created in ranks or degrees, for capacities are various, nevertheless every individual is born holy and pure, and only thereafter may he become defiled.
And further, although the degrees of being are various, yet all are good. Observe the human body, its limbs, its members, the eye, the ear, the organs of smell, of taste, the hands, the fingernails. Notwithstanding the differences among all these parts, each one within the limitations of its own being participateth in a coherent whole. If one of them faileth it must be healed, and should no remedy avail, that part must be removed. (‘Abdu'l-Baha, Selections from the Writings of ‘Abdu'l-Baha)