Kant's system of duties constitutes a Doctrine of Virtue because the duties also indicate what kinds of attitudes, dispositions and feelings are morally virtuous or vicious.

I could identify for virtually every important figure in the history of modern continental philosophy an idea (or more than one) absolutely central to that philosopher's thought, whose original author was Fichte.

I am a one-trick pony. But I have worked hard at something I would have liked to do even if I weren't paid a penny for it, and made a good living at it. You can't be luckier than that in this life, no matter who you are or what you do.

Fichte takes an I or free will to be not a thing or being but an act which is not undetermined but self-determined, in accordance with reasons or norms rationally self-given.

We commit not only theoretical error but also moral wrong in objectifying ourselves or other rational beings, ignoring their capacities for free action and communicative interaction with us.

We can make mistakes about what we ought to do, and these are not the same as making bad decisions about what to do.

Kant does not think there is anything wrong with being beneficent from sympathy. He thinks we have a duty to cultivate sympathetic feelings by participating in the situations of others and acquiring an understanding of them. He thinks we also have a duty to make ourselves into the kind of person for whom the recognition that something is our duty would be a sufficient incentive to do it (if no other incentives were available to us). That's what he means by "the duty to act from the motive of duty".