"Harry was known – notorious even in some circles – as a defender of the Senate and the rights of individual senators as he worked tirelessly to assist them to perform their constitutional duties. He was fearless in emphasising the necessary distinction between the parliament and the executive, even though that made him unpopular with various governments over the years.
Parliament is a place where words matter and Harry will long be remembered as a master wordsmith. In his numerous published and unpublished writings, he explained complex constitutional and procedural matters with clarity, logic and style."
Dr Rosemary Laing, former Clerk of the Senate