The rapid progress of science is shedding new light on the eternal questions of philosophy. Alain Stahl provides an exhaustive and coherent examination of the big questions that physics and the life sciences raise today. This book is a translation of the second French edition (2010), updated and expanded to include the most recent scientific findings. It will be of interest to anyone studying, working in, or thinking about science and philosophy. The author, Dr. Alain Stahl, a scientist by training, spent his outstanding professional career working as a chief technical officer and then managing director of several large French chemical companies. After retiring, he has focused his efforts on integrating insights from scientific and philosophical advances, and the present volume is the culmination of this synthesis.