Nobel prizewinning economist and New York Times columnist Paul Krugman has a condominium in St. Croix, a large house in Princeton, N.J., and an apartment in New York. His wife, who edits his writing, "was so upset when Reagan was elected that she moved to England." He's a science fiction fan with two cats and no children. He "pulled out of the stock market ten years ago and never went back," though he does hold some Ford Motor bonds. This all is told in a New Yorker magazine profile.