In his introduction Father Weisheipl observes that he set out to write the kind of work he would have liked to have had when he began his own Thomistic studies some thirty years ago. That, in essence, is what is wrong with the book, at least from a commercial standpoint. It is what every seminarian and every student in Catholic universities would have welcomed in the '30's and '40's and even in the '50's: an intelligible and intelligent synthesis of the work of the master synthesizer of the Middle Ages who, until a decade ago, was the guiding light of Catholic theology and philosophy. Today, the Doctor Communis of Catholicism is studiously ignored. His works gather dust. And books on Aquinas are as rare as -- well, as books on Bonaventure, or Suarez, or Albertus Magnus. All the more reason, perhaps, why crypto-Thomists will prize this graceful, sympathetic and comprehensive study of the once, and perhaps future, Master of the Schools.