Mysticism, according to its historical and psychological definitions, is the direct intuition or experience of God; and a mystic is a person who has, to a greater or less degree, such a direct experience -- one whose religion and life are centered, not merely on an accepted belief or practice, but on that which the person regards as first hand personal knowledge.
Evelyn UnderhillAs the social self can only be developed by contact with society, so the spiritual self can only be developed by contact with the spiritual world.
Evelyn Underhill