Quantum Mechanics of Fundamental Systems 1

Il capitano generale lagrimo per allegrezza e nomino quel Deseado perehe lavevamo gia gran tempo desiderato. Antonio Pigafetta Il Primo Viaggo in torno al Mondo I would like to take some poetic license in introducing this volume in a way that seems appropriate for a country like Chile that Iooks to the ocean. I believe it was Heisenberg who compared different times in physics with sailing a ship. He said that most of the time we keep our ships in port or in the protection of a bay. But on a few occasions we go into the open sea and those occasions are really the great times in theoretical physics when everything can change. It does not seem totally unwarranted to hope that we are now entering one of those times. In that spirit I would like to mention a wonderful book which in English would be called something like Chile Or a Crazy Geography.