The present volume "Excitation Energy and Electron Transfer in Pho* tosynthesis" is dedicated to a colleague and dear friend Warren L. But- ler. I first met Warren when he visited the University of Illinois at Ur- bana during the early sixties; he left an indelible impression on me as a person with warmth and enthusiasm. Initially, he was someone I looked to for guidance, but later we also became friends. Whenever I passed through Los Angeles, I always telephoned Warren and often end- ed up taking a plane to San Diego to stay with two wonderful people, Warren and his wife Lila. His...