Gnosiology (from the Greek gnõsis, "knowledge") is the study of intuitive and or spiritual knowledge it is this knowledge in contrast to scientific and or empirical knowledge. Scientific and or empirical knowledge (in Greek, epistẽmẽ) is knowledge of nature, the natural or material world. Epistemological knowledge as such is knowledge based on the finite attributes of human existence. Gnosis is knowledge of the divine, spiritual and also of the uncreated.
- Definition of gnosiology by The Very Rev. Prof. George Metallinos of the University of Athens Department of Theology