“There is nothing more worthwhile than to pray to God and to converse with him, for prayer unites us with God as his companions. As our bodily eyes are illuminated by seeing the light, so in contemplating God our soul is illuminated by him. Of course the prayer I have in mind is no matter of routine, it is deliberate and earnest. It is not tied down to a fixed timetable; rather it is a state which endures by night and day.“
(St. John Chrysostom, on prayer)