Or are they co-ordinate, but not inter-dependent, that is, 'per harmonium præstabilitam'.

All are necessary and inter-dependent, and it is the want of recognising this principle which so often leads to failure and consequent abandonment, or even wholesale denunciation, of the regimen followed.

Ideas of law, of virtue, of religion, of the physical universe, of history, of the social union itself, all march in a harmonious and inter-dependent order.