I knew this book is introductory, but how elementary the content is is still unexpected. With the exception of St. Anthony of Egypt, all other major figures in early monasticism were covered in less than five pages, and these are essentially summaries of the primary sources for beginners. There is neither in-depth analysis nor worthwhile spiritual insight - in a word, suitable only for someone who knows absolutely nothing about monasticism. Even so, I'd recommend going to the primary sources directly.