In a free world, choice is an essential opportunity granted to people. However, it is effectively utilized only by people acquainted with reality or truth especially of knowledge, religion and the purpose of life, and also of human nature and a viable economic system due to their significance to leadership, management, politics, resource utilization and personal development. Moreover, there have been and there are still questions, issues, problems and challenges requiring true answers or solutions which are often difficult to find or subjected to continuous critiques. Speculation is often the first tool of investigation for answers to such questions and problems. This book explains the positions of speculation, science and revelation as means of knowing the truth without which one's lifetime time could be spent on what is worthless.