"A certain Brother came once to Abbott Theodore and spent three days begging him for a word. The Abbott however did not answer him, and he went off sad. So a disciple asked, ‘Father, why did you not speak to him?’ The elder replied: ‘I spoke no word to him because he is a trader in words, and seeks to glory in the words of another’." – Wisdom of the Desert, translated Thomas Merton
I'm never seen a book on the spiritual life which is so jarringly egotistical and self-regarding as this. The only lesson it has to teach is negative - this is now *not* to do it - and it is of interest only for the description of the sites in Egypt, and of traditional anchorite Fr Lazarus. Even then, though, it's probably better to look him up on Youtube.
My instinct is to say, 'how come there isn't a decent book on Fr Lazarus?' - but, when you come to think about it, how could there be? As with the old Desert Fathers, there's really nothing to say - it's all about what you *do*.