Scoutcraft - The Scoutmaster is a Hero

The Scoutmaster who is a hero to his boys holds a powerful lever to their development, but at the same time brings a great responsibility on himself. They are quick enough to see the smallest characteristic about him, whether it be a virtue or a vice. His mannerisms become theirs, the amount of courtesy he shows, his irritations, his sunny happiness, or his impatient glower, his willing self-discipline or his occasional moral lapses — all are not only noticed, but adopted by his followers. 

Therefore, to get them to carry out the Scout Law and all that underlies it, the Scoutmaster him-self should scrupulously carry out its professions in every detail of his life. With scarcely a word of instruction his boys will follow him.