This is a tribute to Judea Pearl, the father of Daniel Pearl, a reporter with the Wall Street Journal who was murdered in January 2002 by Islamist terrorists in Pakistan. Judea is also a world-renowned professor of computing at UCLA, where a lecture in honor of Daniel — to have been delivered today, Feb. 27 — has been canceled as a consequence of anti-Israel protests. I’ve never had the honor of meeting Judea, but I’ve admired him from afar for more than two decades. He is among the bravest of men, and the finest of Jews. Judea’s son Daniel was...