This morning, our lecturer Daniel Koh told us about a circulating creed in the 1940s around these two influential theologians. And I found the link to it (from Time.com; originally published in the magazine dated 23 August 1943):
"Dr. Reinhold Niebuhr, who last Thursday received the degree of D.D. from Oxford University, is recognized as an outstanding religious teacher.
So great, indeed, is the influence which, along with Professor C. H. Dodd of Cambridge, he exercises over the younger generation of theologians, that a current Oxford witticism enjoins:
'Thou shalt love the Lord thy Dodd with all thy heart, and thy Niebuhr as thyself.'"