It is impossible to comprehend the crisis in the post-conciliar Church, and the radical transformation attempted in the name of progress since Vatican II, without understanding the liberal mindset which prepared the way. Indispensable for any student of the history of the crisis in the Church or Vatican II. It is likewise crucial for us to read and absorb if we are to know how to react to post-conciliar liberalism, that is if we are to have the strength of conviction to refuse all compromise with the attack on the supernatural Catholic Faith that it really is. Imprimatur.