I'm told that John Jackson was the world's foremost scholar on the law of international trade policy and institutions. Since all that I know of trade law I learned from John, I can only trust the opinions of others on that. But I know that John had an excellent understanding of, and appreciation for, the economics of international trade. And he put those together in both his writings and his advice to policymakers, through which he had a profound influence on the development of the institutions of trade policy that we enjoy today.