We find, too, that in working out our ideal we are not only required to endure pain, but to submit to the sternest discipline. First, we need self-discipline. Each individual finds that he is required to exercise his faculties to the full, make the utmost of himself, attain to the highest of which he is capable, and be ready for any sacrifice. So he must train his faculties to the highest. He is required also to work in concert with his fellows. The stern obligation is therefore upon him to forgo his own private advantage in order that the common end may be achieved. This obligation he has readily to acknowledge and submit to. He has also to acknowledge what he owes to Nature, what is his _duty_ to Nature. And that duty he has to perform and her authority he has to admit. He can retain his freedom and initiative and enterprise. But he has to obey the laws of Nature, acknowledge her authority, submit to her discipline. No soldiers were more full of independence and initiative than the Australians, but no troops at the end of the War realised better than they did that success can only be achieved through strictest discipline as well as freedom and initiative. The lover also knows that only through the sternest discipline and constraint upon himself is his object attained. Thus there is an imperative necessity upon a man to be orderly in his behaviour, loyal, faithful, dutiful, and obedient to the ideal within him. Any failure in loyalty and obedience is a sin against Nature and a sin against himself. The call of honour and of humanity is upon him, and that call he has to obey without hesitation. Equally are men expected to be ready to _exercise_ authority, to maintain discipline and preserve order. The exercise of authority is no less an obligation and duty upon men than obedience to it. And the one has to be practised just as much as the other. Or, rather, the exercise of authority has to be practised more, for it is more difficult and more valuable. And the proper exercise of authority, maintenance of discipline, and preservation of order, is a duty men owe ultimately to Nature herself. For it is from Nature that they finally derive their authority and to Nature that they are ultimately responsible.