Though Russell H. Conwell’s Acres of Diamonds have been spread all over the United States, time and care have made them more valuable, and now that they have been reset in black and white by their discoverer, they are to be laid in the hands of a multitude for their enrichment. In the same case with these gems there is a fascinating story of the Master Jeweler’s life-work which splendidly illustrates the ultimate unit of power by showing what one man can do in one day and what one life is worth to the world. As his neighbor and intimate friend in Philadelphia for thirty years, I am free to say that Russell H. Conwell’s tall, manly figure stands out in the state of Pennsylvania as its first citizen and ``The Big Brother’’ of its seven millions of people. From the beginning of his career he has been a credible witness in the Court of Public Works to the truth of the strong language of the New Testament Parable where it says, ``If ye have faith as a grain of mustard-seed, ye shall say unto this mountain, `Remove hence to yonder place,’ AND IT SHALL REMOVE AND NOTHING SHALL BE IMPOSSIBLE UNTO YOU. As a student, schoolmaster, lawyer, preacher, organizer, thinker and writer, lecturer, educator, diplomat, and leader of men, he has made his mark on his city and state and the times in which he has lived. A man dies, but his good work lives. His ideas, ideals, and enthusiasms have inspired tens of thousands of lives. A book full of the energetics of a master workman is just what every young man cares for.