Peter Wehner, "The Corner," National Review Online, September 18, 2009.
Irving was a great man, a model and courageous public intellectual, and a giant in the conservative movement. He brought to it enormous intelligence and scholarship, great learning and wisdom, a jolly good sense of humor, and all the right sensibilities. He embodied a conservatism that was principled, sophisticated, and self-confident; one capacious in its spirit; one which demonstrated a deep love for our country and its founders. He was both a scholar and a shrewd political thinker. There was seemingly nothing he could not write about, always well and with wit. He was also — and not incidentally — a marvelous and generous husband, father, and friend.