I do not preface my publication with a preface: let it speak for itself. Everything contained in it is nothing other than the grace-filled illumination of the soul, which I received from the all-enlightening Spirit of God in moments of deep attention and self-examination, especially during prayer. Whenever I could, I wrote down my blessed thoughts and feelings, and books have now been compiled from these notes over many years. The content of the books is very varied, as readers will see. Let them judge the content of my publication.