What is central to morality is rational self-constraint (acting from duty), in cease where there is no other incentive to do your duty except that the moral law commands it.
Virtues consist not only of acting in certain ways, but in ways of caring and feeling.
Fichte would identify all states of our minds with states of our body - perhaps not merely of our brain, but the whole body as an acting organism.
We totally misunderstand both his aims and his contribution if we try to read into Marx some anticipation of either the modest successes or the disastrous failures of those who later thought they were acting in his name.
