What’s the one thing you should never do? Quit? Depends on who you talk to. Steal? Cheat? Eat food from a dented can? Myron Lufkin’s father, Abe, once told him never get your temperature taken at the hospital. Bring your own thermometer, he said; you should see how they wash theirs. He ought to have known; when he was at Yeshiva University he worked as an orderly in the hospital, slid patients around on gurneys, cleaned steelware. Myron knows all his father’s hospital stories and all his rules. On the other hand, there are things you should do. Always eat sitting down. Wear a hat in the rain. What else? Never let the other guy start the fight. Certain inviolable commandments. In thirty-two years Myron Lufkin had never seen his father without an answer. That is, until the day five years ago when Myron called home from Albert Einstein College of Medicine and told his father he had had enough, was quitting, leaving, kaput, he said. Now, Myron, living in Boston, sometime Jew, member of the public gym where he plays basketball and swims in the steamy pool after rounds, still calls home every other week. The phone calls, if he catches his father asleep, remind him of the day five years ago when he called to say that he was not, after all, going to be a doctor. It was not the kind of thing you told Abe Lufkin. Abe Lufkin, a man who once on Election Day put three twelve-pound chains across his chest and dove into San Francisco Bay at Aquatic Park, to swim most of the mile and threequarters across to Marin. As it turned out they had to pull him from the frothy cold water before he made the beach−but to give him credit, he was not on a young man. In the Chronicle the next day there was an inside page, sputtering and shaking on the sand, steam rising off his body. Rachel, Myron’s mother, is next to him in a sweater and baggy wool pants. Myron still has the newspaper clipping in one of his old butterfly display cases…