He says expressly that the laws are not yet known, and suggests that some future genius may do for social phenomena what Kepler and Newton did for the heavenly bodies.

As we shall see, this is precisely what some of the leading French thinkers of the next generation will attempt to do.
But cautiously though he framed the hypothesis Kant evidently considered Progress probable.

He recognised that the most difficult obstacle to the moral advance of man lies in war and the burdens which the possibility of war imposes.

And he spent much thought on the means by which war might be abolished.

He published a philosophical essay on Perpetual Peace, in which he formulated the articles of an international treaty to secure the disappearance of war.