“Who would have ever heard of Theodore Roosevelt outside of his immediate community if he had only half committed himself to what he had undertaken, if he had brought only a part of himself to his task? The great secret of his career has been that he has flung his whole life, not a part of it, with all the determination and energy and power he could muster, into everything he has undertaken. No dillydallying, no faint-hearted efforts, no lukewarm purpose for him!”
