"I'd always been interested in psychology"

Morrie Schwartz's quote recommends that he had an enduring interest in psychology. This might suggest that he had actually had an interest in the topic for a long period of time, or that he had actually been studying it for a while. It might likewise imply that he had actually been reading about psychology or discussing it with others. It could also mean that he had actually been observing people and their behavior, and trying to understand why they acted the method they did. Whatever the case, it is clear that Morrie Schwartz had a strong interest in psychology and was eager to read more about it. This might have been a significant consider his choice to pursue a profession in sociology, which is closely related to psychology.