Author: Rupert Spira. In The Heart of Prayer, Rupert Spira elaborates on the understanding that the peace and happiness we seek can be found in the knowing of our own being. Throughout The Heart of Prayer, Spira interlaces his contemplations with his own invocations-as well as teachings, prayers, and poetry gathered from centuries of great works and sacred texts-creating a rich experience of the unity of the perennial non-dual understanding.