Allen's work combines incisive Christian insights with the Buddhist truth that precided Christianity and Mohammadanism: "All that we are is the result of our thoughts." Allen's Biblical quote is "As a man thinketh in his heart, so is he."
Allen insists upon the power of the individual to form and reform his own character and to create his own happiness. He writes: "Thought and character are one and as character can only manifest and discover itself through environment and circumstance, the outer conditions of a person's life will always be found to be harmoniously related to his inner state. This does not mean that a man's circumstances at any given time are an indication of his entire character, but that those circumstances are so intimately connected with some vital thought element within him that, for the time being, they are indispensable to his development."
Allen's works impel us to think- even when we would rather be doing something else. He describes how how thought leads to action showing us how to turn our dreams into realities. His philosophy has brought success and happiness to millions around the world. Later writers such as Norman Vincent Peale (The Power of Positive Thinking) and Joshua Liebman (Peace of Mind) would build upon his legacy to create followings of millions.
"We become spiritually rich when we discover the adventure within; when we are conscious of the oneness of all life; when we know the power of meditation; when we experience kinship with nature." ~ Allen
Allen's message is one of hope even in the midst of confusion: "Yes, humanity surges with uncontrolled passion, is tumultuous with ungoverned grief, is blown about by anxiety and doubt. Only the wise man, only he whose thoughts are controlled and purified, makes the winds and the storms of the soul obey him."