"The Practice of the Presence of God," compiled by Father Joseph de Beaufort, is a collection of the wisdom and teachings of Brother Lawrence, a 17th century Carmelite monk. This collection of letters and other records records his conversations, thoughts, and philosophy, chiefly a development of an awareness of the presence of God.
The essential thing in religion is making the heart pure; the Kingdom of Heaven is within us, but only the pure in heart can see the King. While we think of the world, it is only the world for us; but let us come to it with the feeling that the world is God, and we shall have God.
-Swami Vivekananda