In the words of Hazrat Inayat Khan: By keen observation of light one realizes that it is the nature of light to form a perpendicular and a horizontal line; and if it is the nature of the external light to form a cross it is also the nature of the inner light...In its first meaning, therefore, the cross is the symbol of manifestation; it belongs also to the journey towards the spiritual ideal.. More: www.sufi-message.org/meditati...