Book Notices

never forget what they now know, they never learn something new, in fact they have never learned anything. Their thought is eter- nal. Since also the three Persons do not have precisely the same set of thoughts, they are not one Per- son, but three... (pp. 106, 107). While it certainly is true that "Person" is a difficult concept to define (H. Hoeksema defined it as "An individual subsistence in a ra- tional, moral nature"), Clark's~defi nition of Person as a c.tion of thoughts will not do. A...