Hitler and Mussolini were only the primary spokesmen for the attitude of domination and craving for power that are in the heart of almost everyone. Until the source is cleared there will always be confusion and hate wars and class antagonisms.
Benevolence alone will not make a teacher nor will learning alone do it. The gift of teaching is a peculiar talent and implies a need and a craving in the teacher himself.
There is no end of craving. Hence contentment alone is the best way to happiness. Therefore acquire contentment.