These confessions teach the root idea of Calvin's theology, the immeasurable awfulness of God, His eternity, and the immutability of His decrees.
The pre-existence of souls is another inference from the immutability of God, although Origen also deduced it from the nature of the soul, which as a spiritual potency must be eternal.
His most important works are: Aesthetik (Leipzig, 1859; 3rd ed., 1885), supplemented by Die Kunst im Zusammenhang der Kulturentwicklung and der Ideale der Menschheit (3rd ed., 1877-1886); Die philosophische Weltanschauung der Reformationszeit (Stuttgart, 1847; 2nd ed., Leipzig, 1886), and Die sittliche Weltordnung (Leipzig, 1877; 2nd ed., 1891), in which he recognized both the immutability of the laws of nature and the freedom of the will.
He alone did not obey the law of immutability in the enchanted, sleeping castle.
His cosmology was an assertion not so much of the immutability of the One as rather of the mutability of the Many.
The Stoics were not quite agreed as to the immutability of virtue, but they were agreed that, when once possessed, it could only be lost through the loss of reason itself.
Buffon (1753-1778), at first a partisan of the absolute immutability of species, subsequently appears to have believed that larger or smaller groups of species have been produced by the modification of a primitive stock; but he contributed nothing to the general doctrine of evolution.
The immutability of God requires the eternity of the Logos and of the world.