"Gnosiology" (from the Greek γνώσης or "gnõsis," "knowledge") is the study of intuitive and/or spiritual knowledge. It is this knowledge in contrast to scientific and/or empirical knowledge (in Greek, επιστήμη or "epistẽmẽ") which 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