from A Key to the Doctrine of the Eucharist
The urgent problem is, how am I to be llinked up effectively with that great mystery of Christ's death? When shall I know that Christ is not only the Redeemer, but also my Redeemer? Mere membership with the human race does not link me up with Christ, though it be true that Christ died for the whole race. This membership is indeed a condition, sine qua non , of my becoming one day a member of Christ; but a member of Christ I shall not become unless some new realities be brought into play. These new realities which are the link between me and Christ are faith and the sacraments. (p. 2)
One more passage to give a flavor of the power of the exposition and of the ideation--
Saint Thomas divides the life of mankind into four seasons--the state of innocence before the fall, the state of sin before Christ, the state of sin after Christ, and the state of bliss in heaven. No sacraments are necessary in the first and in the last state; sacraments are necessary to man in the two middle states. But it is in the "state of sin after Christ" that sacraments reach their perfection; the seven sacraments of the Christian dispensation are sacraments in the highest sense, because, besides signifying the grace which is the inheritance of faith, they also contain that grace and cause it.* (p. 10)
*Nostra autem sacramenta gratiam continent, et causant." Summa III q. 61, a. 4, ad 2.
It is this sparkling clarity of thought and strongly rhythmic and orotund prose that is one of the chief delights of reading this book. Once again, I strongly urge everyone who is interested in this subject to consider supporting Zaccheus by purchasing the book.