"But optics sharp it needs, I ween, To see what is not to be seen"

John Trumbull's quote, "But optics sharp it needs, I ween, To see what is not to be seen", is a thought-provoking statement exploring the nature of perception and truth. In this context, the term "optics" refers to the tools or capabilities needed to perceive the world around us. Trumbull suggests that to truly understand or view particular realities or realities-- those not instantly obvious to the naked eye-- one must possess a heightened sense of understanding or insight.

The expression "optics sharp it requires" indicates that regular vision or understanding is insufficient. "Sharp optics" metaphorically means an increased, more critical way of seeing. This might involve a form of important thinking, instinct, or other cognitive abilities that enable a specific to view much deeper realities or concealed aspects of reality. The implication is that some truths or facts require effort and keen insight to uncover, similar to the principle of "reading in between the lines."

The latter part of the quote, "To see what is not to be seen", suggests the obstacle of perceiving the imperceptible. This might describe abstract principles, hidden meanings, underlying truths, or even future possibilities that are not yet realized or noticeable in the standard sense. It suggests a level of foresight or imagination, where one is able to conceive or understand things that are not immediately present or obvious.

This quote can be translated as a commentary on the restrictions of human understanding, advising people to cultivate their cognitive capabilities to understand complexities beyond the shallow or noticeable. It talks to the value of curiosity, open-mindedness, and intellectual rigor when seeking to comprehend the world. In essence, Trumbull's words challenge us to look beyond the apparent and engage with a much deeper level of perception to truly understand the myriad layers of truth.