The quote "But truth is like a thrashing-machine; tender sensibilities must keep out of the way," captures the idea that confronting reality can be harsh and unyielding. Just as a thrashing machine separates grain from chaff, truth can be brutal and uncomfortable, often leaving the sensitive and fragile aspects of ourselves vulnerable. In navigating life, one may need to approach truth with resilience and a readiness to face harsh realities rather than evade them.

Herman Melville's work, "The Confidence-Man," explores themes of deception and self-awareness. Through this metaphor, he suggests that only those who can withstand the rigors of truth will emerge with a clear understanding of themselves and the world. For the more sensitive individuals, staying clear of such confrontations with truth can sometimes be a form of self-preservation in a world that can be unforgiving.