Summary
This quote suggests that the speaker's father possessed an exceptionally logical and unbiased nature. The use of "rational" indicates that he made decisions based on reason and sound judgment, employing logical thinking rather than being swayed by emotions. Furthermore, by being described as "dispassionate," it implies that he was able to remain calm and detached, not allowing personal feelings to cloud his judgment. Overall, the quote portrays the speaker's father as a highly level-headed and objective individual.