" The two functions of your mind are essentially unlike. Each is endowed with separate and distinct attributes and powers. The nomenclature generally used to distinguish the two functions of your mind is as follows: The objective and subjective mind, the conscious and subconscious mind, the waking and sleeping mind, the surface self and the deep self, the voluntary mind and the involuntary mind, the male and the female, and many other terms. You will find the terms “conscious” and “subconscious” used to represent the dual nature of your mind throughout this book. "

― Joseph Murphy , The Power of Your Subconscious Mind