What We May Say to Hare in The Light of Kantian Ethics?
Some Kantian philosophers, like R. M. Hare, hold that weakness of will is impossible. The reason is that when an agent agrees to do an action, according to his evaluative judgment it will be understood as «He shall do that action». If so, all agents do only actions which they are genuinely and in the fullest sense hold they ought to do. Therefore, weakness of will, which is known as an agent's action contrary to his better judgment, is impossible. However, this perspective is vague because it misses the difference within the will which weakness refers to. In the light of Kantian ethics, at least two different types of will can be known, namely empirical and pure will. We should consider the possibility of weakness of will in each type separately. We argue that weakness of will is impossible if it is the pure will; if not, weakness of will is possible.