The actions of men are subject to general immutable laws expressed in statistics.
The philosophers, he says, "are those who are able to grasp the eternal and immutable"; they are "those who set their affections on that which in each case really exists" (Rep. 480).
On returning to France, to the bosom of the great, strong, magnificent, peaceful, and glorious fatherland, I should have proclaimed her frontiers immutable; all future wars purely defensive, all aggrandizement antinational.
Owing principally to the fact that the system of the caliph Omar came to be treated as an immutable dogma which was clearly not intended by its originator, and to the peculiar relations which developed therefrom between the Mussulman Turkish conquerors and the peoples (principally Christian) which fell under their sway, no such thing as an Ottoman nation has ever been created.
Whether Plato understood these forms as actually existent apart from all the particular examples, or as being of the nature of immutable physical laws, is matter of discussion.