For 10 points, give the surname shared by theologian H. Richard and "Serenity Prayer" author Reinhold.
A thinker with this surname had his major work "revisited" in a 2008 book by D.A. Carson. That work, which proposes five ways Christianity can interact with modern society, is called Christ and Culture. Another thinker with this surname asserted that "man is a sinner...because he is betrayed, by his very ability to survey the whole, to imagine himself the whole" in a book based on his 1939 Gifford Lectures. Those lectures were given seven years after the publication of his book on the inherent conflict between individual and collective morality. The Nature and Destiny of Man and Moral Man and Immoral Society were written by a thinker with this surname who founded Christian Realism and penned a text in which the speaker seeks to "accept the things I cannot change". For 10 points, give the surname shared by theologian H. Richard and "Serenity Prayer" author Reinhold.
A thinker with this surname had his major work "revisited" in a 2008 book by D.A. Carson.
Niebuhr [accept H(elmut) Richard Niebuhr or (Karl Paul) Reinhold Niebuhr]