A believer of the Religious Science movement, a spiritual, philosophical and metaphysical religious movement within the New Thought movement, Joseph Murphy was a doctor of psychology who wrote extensively about the power of the subconscious mind. In an introduction to his most popular book on the subject, 'The Power of Your Subconscious Mind', he writes 'I have endeavored to explain the great fundamental truths of your mind in the simplest language possible. I believe that it is perfectly possible to explain the basic, foundational, and fundamental laws of life and of your mind in ordinary everyday language. You will find that the language of this book is that used in your daily papers, current periodicals, in your business offices, in your home, and in the daily workshop. I urge you to study this book and apply the techniques outlined therein; and as you do, I feel absolutely convinced that you will lay hold of a miracle-working power that will lift you up from confusion, misery, melancholy, and failure, and guide you to your true place, solve your difficulties, sever you from emotional and physical bondage, and place you on the royal road to freedom, happiness, and peace of mind. This miracle-working power of your subconscious mind can heal you of your sickness; make you vital and strong again. In learning how to use your inner powers, you will open the prison door of fear and enter into a life described by Paul as the glorious liberty of the sons of God.'