This book describes how daily prayer can be used as a way of spiritual development. It is perhaps the first full and clear explanation of this process as seen from the Orthodox perspective, written during the last times of classical Russian monasticism. The second half of the book contains a selection of prayers by the early fathers of the church chosen to aid the reader who wants to put the ideas of this book into practice. There is also a three page biography of Theophan at the end of the book.
From the inside cover by Theophan:
A summary from Sermon Four, a life of prayer:
"I have now spoken to you about techniques of prayer three times:
In order that everyone can take part in the blessing of prayer to the measure of his capacity, the Lord has showed us different steps and different kinds of prayer. Because the work of prayer is a great labour, it is, as I said earlier, the proof of the life of spirit, as well as its food. Because of this, above all else, we should strive for perfection in prayer."