Dr. Izzeldin Abuelaish, photographed at his home in Toronto.

BECAUSE after the death in January 2009 of his three daughters—Bessan, 21; Mayor, 15; and Aya, 14—from a tank shell aimed at his home in Gaza, the Palestinian doctor Izzeldin Abuelaish decided to write a book titled I Shall Not Hate (out this month from Bloomsbury), in which he declares, "If I could know that my daughters were the last sacrifice on the road to peace between Palestinians and Israelis, then I would accept their loss." BECAUSE in all his speeches and writing since the Israeli invasion of Gaza in late December 2008, Dr. Abuelaish has advanced not just the need for peace between Jews and Arabs but the vital cause of women's education, BECAUSE there are few people who have struggled to break free from an upbringing in a Palestinian refugee camp to qualify as an obstetrician and gynecologist, even fewer who have borne the humiliations heaped on Arabs crossing the border to work-in his case as a researcher at Sheba Medical Center, in Tel Aviv—with such patience, and only a tiny number who have sustained their hope through the sort of suffering endured by Dr. Abuelaish. Four months before his daughters were killed, his wife and their mother, Nadia, died from acute leukemia. When the family was recovering, the doctor took his children—two sons and six daughters—to the beach in Gaza, where Bessan, Mayor, and Aya wrote their names in the sand, in English script, and posed for a photograph. A month later they were dead, BECAUSE it is the remarkable mission of the boy from the Jabalia refugee camp, who is now an associate professor at the Dalla Lana School of Public Health, in Toronto, to make sure those names are never washed away.