Those who see Smith as a defender of capitalism - as it existed in Marx's day, or as it exists today - show above all that they are not living in the real world. They are behaving as though the undeveloped form of capitalism Smith studied is still with us.

What I most fear now is that within a century or so there may not be any human future at all.

If being "iron headed" is to be lacking such feelings, then Kant's position is that an ironheaded person could not be a moral agent because such a person would not be rational.

I think Fichte did take it further than Kant by arguing that we can regard the moral law as objectively valid only by seeing it as addressed to us by another being, even though Fichte thought God could not literally be a person who could address us.

It is actually a nice question how far Descartes himself endorses the monological and metaphysically dualistic theory of mind associated with his name and his legacy in early modern philosophy. But Fichte does reject this tradition, by suggesting that an immaterial thinking substance is an incoherent notion, and a rational being whose rationality was not developed through communication with others is a transcendental impossibility.

In general, those who defend capitalism are basically out of touch with reality.

Kant does not regard freedom as an item of faith because it is too basic to our agency to be related to any end.