<!--StartFragment--><p><span>Few books intheology have faced the twentieth century with all its horrors and yet revoicedthe redemptive Christian antidote as convincingly as Joseph Ratzinger''s 1968masterpiece, <i>Introduction to Christianity</i>. In <i>Gift to Church andWorld</i>, John Cavadini and Donald Wallenfang present papers from theconference held at the University of Notre Dame to celebrate the fiftiethanniversary of this classic book''s publication and, through it, Ratzinger''slasting influence on the world of Christian theology. Bishops, priests, and laymen and women set their hands to ''the trowel of tribute,'' honoring the legacyof Joseph Ratzinger and the pivotal role he has played in the recent history ofthe Catholic Church.<o></o:p></span></p><p class=MsoNormal s