The ten realms exist simultaneously in one’s mind, but one may not necessarily experience them all at the same given moment. One may experience any one of the ten realms at any moment, depending on the conditions of what one’s actions were and are in the past and present, and where one’s thoughts reside. When one realm is experienced, it is visibly present in one’s mind, but the other nine realms are also present in one’s mind, though in an invisible state. (Vol. 2, Page 64)