A categorical imperative would be one which represented an action as objectively necessary in itself, without reference to any other purpose.
Immanuel KantIn man (as the only rational creature on earth) those natural capacities which are directed to the use of his reason are to be fully developed only in the race, not in the individual.
Immanuel KantNo state at war with another state should engage in hostilities of such a kind as to render mutual confidence impossible when peace will have been made.
Immanuel Kant