One of my Lenten books this year is The Path of Prayer by St Theophan the Recluse. The language and ideas are very accessible, because it started life as four sermons to ordinary people.
One of the key themes is that the great heights of prayer, the great depths of mystical intimacy with God, can be found simply by saying our ordinary prayers with devotion and attention. The everyday prayers that we say (the Our Father, the Hail Mary, the Glory Be, the Psalms, etc) should be the ordinary means of discovering that union with God that we are searching for. I like this because it undermines the idea that there is some kind of split between ordinary vocal prayer, popular devotion, and contemplative prayer. They should all be, at heart, our standing in the presence of God, with hearts and minds recollected and open to him.
Here is just one passage from the first sermon. He is explaining how we should pray our ordinary daily prayers.
Simply enter into every word, then bring the meaning of each word down into your heart. That is, understand what you say, and then become aware of what you have understood. No further rules are necessary. These two, understanding and feeling – if they are properly carried out – ornament every offering of prayer with the highest quality, and this makes it fruitful and effective. For example, when you recite ‘and cleanse us from all impurities’, experience with feeling your impurity, desire to become pure, and pray to God in hope for it.
A ‘feeling’, in this Orthodox spiritual tradition, is not a fleeting emotion or mood (which we can’t control and which wouldn’t have much significance for our prayer) – it is one’s willingness to enter into the personal meaning of the truth that is being expressed in the words, to embrace this meaning with the whole heart and mind, instead of just keeping it at a distance as an abstract truth or a string of sounds at the very edge of consciousness.
St Theophan was one of the great Russian ‘starets’ of the nineteenth century, a theologian and bishop who became a monk and spent the last twenty years of his life in solitude as a hermit within his community. He is one of the masters of the spiritual life.
It seems that the book is out of print, but there is a big selection of passages from St Theophan about prayer here at the Orthodox Christian Information Society.