Buswell's "Workable Definition" of time

James Oliver Buswell, Jr. understood time to be an abstract concept similar to the laws of mathematics and logic. On this premise he argues that time does not have a beginning or end (or more accurately, that it is illogical to propose the question). Here is an extended quote from page 47 of his book, "A Christian View of Being and Knowing" (Zondervan):

Time therefore should be defined as the mere abstract possibility of relationships in durational sequence. The question then, "What would come after the hypothetical end of time?" or the question, "What was before the beginning of time?" would be like the question, "What would happen if the multiplication tables should fail?" or, "What was true before the laws of logic were enacted?" Simply, it is always true that two plus two equals four, that two contradictory propositions cannot both be true, and similarly, it is always abstractly possible that events in durational sequence may occur. When finite units are created, propositions are made, and events occur, then these abstract truths are applied to concrete particulars. It thus appears that the definition of time as an abstraction, the mere abstract possibility of relationships in durational sequence, serves as an adequate description of what we mean when we say that beings and events are in time.