What does this quote mean?

“All men by nature desire to know.”

Aristotle treats the desire for knowledge as a basic human tendency, giving curiosity a foundational place in the movement from perception toward understanding.

Source note: Metaphysics, Book I, chapter 1, W. D. Ross translation; the work opens with this claim before discussing sensation, memory, experience, art, and knowledge.

“The fool who knows his foolishness, is wise at least so far. But a fool who thinks himself wise, he is called a fool indeed.”

The verse treats recognition of one’s own foolishness as the beginning of wisdom, while self-certainty without understanding becomes a deeper form of ignorance.

Source note: Dhammapada 63, Chapter V, “The Fool,” F. Max Müller translation, Project Gutenberg #2017. The verse belongs to a Buddhist canonical collection and remains a textual source voice rather than a modern individual-author quotation.

“My trade and art is to live.”

Montaigne makes lived experience itself the central field of inquiry, treating ordinary life as material for reflection rather than a distraction from philosophy.

Source note: Essays of Montaigne, Book II, Charles Cotton translation; the sentence introduces his claim to speak from his own experience.

“The unexamined life is not worth living.”

Socrates links a worthwhile human life with reflection on beliefs, conduct, and reasons rather than unexamined routine.

Source note: Apology 38a; wording varies by translation.

“And pause awhile from Learning to be wise;”

Johnson distinguishes accumulating learning from exercising judgment, asking the scholar to interrupt pursuit of knowledge long enough to examine what wisdom requires.

Source note: The Vanity of Human Wishes (1749), Johnson’s imitation of Juvenal’s Tenth Satire; the line introduces a section on the hazards and disappointments surrounding learned ambition.

“We must know the truth; and we must avoid error.”

James separates two intellectual duties—seeking truth and avoiding falsehood—to show that prioritizing one over the other can produce different habits of belief and inquiry.

Source note: The Will to Believe, essay “The Will to Believe”; Project Gutenberg #26659. James immediately argues that truth-seeking and error-avoidance are distinct laws rather than two phrasings of one command.