…let our aim be to make the energy of prayer alone active in our hearts, for it brings warmth and joy to the intellect, and sets the heart alight with an ineffable love for God and man. It is on account of this that humility and contrition flow richly from prayer. For prayer in beginners is the unceasing noetic activity of the Holy Spirit. To start with it rises like a fire of joy from the heart; in the end it is like light made fragrant by divine energy.
~St Gregory of Sinai
Prayerful Life 