" By itself the affirmation of life can only produce a partial and imperfect civilization. Only if it turns inward and becomes ethical can the will to progress attain the ability to distinguish the valuable from the worthless. We must therefore strive for a civilization that is not based on the accretion of science and power alone, but which cares most of all for the spiritual and ethical development of the individual and of humankind. How "

― Albert Schweitzer , Out of My Life and Thought (Schweitzer Library)