Prayer is undoubtably the most frequently discussed and most thoroughly developed theme in Saint Isaac….
'Prayer', according to Evagrius Pontlcus, 'is the converse of the mind with God'.1 For Isaac the Syrian, the converse of the mind with God is the highest and most important spiritual activity of a Christian, and cannot be compared with any other endeavor: 'Just as nothing resembles God, so there is no ministry or work which resembles converse with God in stillness.2 By prayer Isaac understands the whole range of activities which accompany the converse of the mind with God:
Every good care of the intellect directed toward God and every meditation upon spiritual things is delimited by prayer, is called by the name of prayer and under its name is comprehended; whether you speak of various readings, or the cries of a mouth glorifying God, or sorrowing reflection on the Lord, or making bows with the body, or the alleluias of psalmody, or all the other things from which the teaching of genuine prayer ensues.3