In her book "Education in the New Age", Bailey made predictions about the use of this esoteric racial concept in the schools of the future and that these schools would incorporate the idea of "root races". These "races" are a way of conceptualizing evolution as it occurs over vast prehistoric spans of time, and during which humanity developed body (Lemurian), emotion (Atlantean), and mind (Aryan). She states that there is now being developed a "new race" with a spiritual dimension that expresses as "group qualities and consciousness and idealistic vision". She stated that this new development may take many thousands of years and may therefore not be the quick advance some of her New Age followers wish for. In her "The Destiny of the Nations", Bailey described a process by which this "new race" will evolve, after which "very low grade human bodies will disappear, causing a general shift in the racial types toward a higher standard." For Bailey, the evolution of humanity was intimately bound up with its relationship to this Spiritual Hierarchy. She believed that the influences of religions, philosophies, sciences, educational movements, and human culture in general are the result of this relationship.