As you carefully study the successful methods of public speakers, as briefly set forth in this book, you will observe that there is nothing that can be substituted for personal sincerity. Unless you thoroughly believe in the message you wish to convey to others, you are not likely to impress them favorably. It was said of an eminent British orator, that when one heard him speak in public, one instinctively felt that there was something finer in the man than in anything he said.