Affirmation of life is the spiritual act by which man ceases to live unreflectively and begins to devote himself to his life with reverence in order to raise it to its true value. To affirm life is to deepen, to make more inward, and to exalt the will to live. At the same time the man who has become a thinking being feels a compulsion to give every will-to-live the same reverence for life that he gives to his own. He experiences that other life in his own. He accepts as being good to preserve life, to promote life, to raise to its highest value life, which is capable of development. This is the absolute, fundamental principle of the moral, and it is a necessity of thought.-: Out of My Life and Thought.