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“He who knows only his own side of the case, knows little of that.”
Understanding a position requires serious contact with competing arguments; familiarity with only one side can produce confidence without real comprehension.
Source note: On Liberty, Chapter 2; Mill argues for open discussion because opposing views expose weaknesses and sharpen understanding.
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“We hear only the questions to which we are capable of finding an answer.”
The aphorism suggests that inquiry is limited by the conceptual capacities of the person asking, making intellectual growth partly a matter of becoming able to formulate and recognize better questions.
Source note: The Joyful Wisdom, aphorism 196; Thomas Common translation.
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“The universe is wider than our views of it.”
Reality exceeds any one viewpoint, so confidence in a perspective should leave room for what has not yet been seen.
Source note: Walden, Conclusion; Thoreau uses the sentence while arguing that familiar human views do not exhaust reality.
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“Theories thus become instruments, not answers to enigmas, in which we can rest.”
James describes theories as tools for moving inquiry and experience forward rather than final intellectual resting places that eliminate the need for further testing or revision.
Source note: Pragmatism, Lecture II, “What Pragmatism Means”; Project Gutenberg #5116. Capitalization has been normalized from the represented all-caps sentence while the wording is otherwise preserved.
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“Read not to contradict and confute; nor to believe and take for granted; nor to find talk and discourse; but to weigh and consider.”
Bacon describes reading as active judgment rather than passive agreement or reflexive opposition, making careful consideration the central habit of serious study.
Source note: Of Studies, in Bacon’s instructions for how different kinds of books should be read.
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“To define is to limit.”
Voice: Fictional character · Lord Henry Wotton
Definitions clarify ideas but can also narrow them, especially when a label is treated as the complete reality of a person or experience.
Source note: The Picture of Dorian Gray, 1891 edition, Chapter 17; Lord Henry answers the Duchess of Monmouth’s question “What are you?” with “To define is to limit.”