Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The journal, of which a large portion is first published in these pages, was written during the course of the year 1904, while its author was yet a member of the Society of jesus, but the collection contains also a good deal of matter drawn from a later, and less elaborated notebook, written during the year 1906, in the months succeeding his rupture with the Society, and particularly during the period of his wanderings in France.