Last but not least, we would like to express our gratitude to Ann Johnston, who edited the original English version of the manuscripts, most of them written by authors who are not native English speakers. Moreover, without her tenacity, professionalism, and encouragement, this volume would never have been accomplished. All parts and all aspects of science belong together. Science cannot develop unless it is pursued for the sake of pure knowledge and insight. It will not survive unless it is used intensely and wisely for the betterment of humanity, and not as an instrument of domination by one group over another.
Human existence depends upon compassion and curiosity.