No preface could capture with more sympathy the spirit of this book than the words of Andre George for the tenth anniversary of Pere Teilhard's death; for the photographs collected here, which picture to us a life that has departed, and the accompanying sayings of a man who was so inspired by a passion for the discovery of the truth, bring out the continuity that ran through the life and work and thought of Pierre Teilhard de Chardin, and at the same time illuminate the spiritual adventure on which he himself embarked and which gave him so deep an understanding of the spiritual adventure of all mankind.