He was never quite certain what he thought about anything until he had tested his opinion for seaworthiness in the course of some polemical storm.
The quote reflects a character's struggle with forming opinions, suggesting a deep internal conflict regarding beliefs and thoughts. It indicates that the character does not feel confident or certain about his views until they undergo rigorous debate or confrontation. This metaphor of "testing for seaworthiness" implies that only through facing challenges can one truly understand the validity of their beliefs.
This process of examining and questioning one's opinions highlights a broader...