Intelligence quotes

“The American Scholar” (1837), represented in Emerson’s Essays, Project Gutenberg #16643. Emerson contrasts thought as a partial function with the fuller act of living one’s truth; the line elevates character without dismissing intellectual life.

Human Nature and Conduct (1922), Part Four, Section III, “What is Freedom?”, printed page 304, Project Gutenberg #41386. Dewey states “Intelligence is the key to freedom in act” while arguing that effective action depends on consulting conditions and forming plans that enlist their cooperation; the following page stresses study, foresight and adaptation. This is historical philosophical / social-psychological argument rather than current neuroscientific or experimentally settled behavioral evidence.

The World I Live In (1908), Chapter XII, “The Larger Sanctions,” printed page 160, Project Gutenberg #27683. The sentence “My intellectual horizon is infinitely wide” immediately follows Keller’s assertion about mental vision and belongs to the same first-person philosophical defense of intellectual and imaginative range.

The Future of the American Negro, Chapter III; Project Gutenberg #26507. This is a deliberately short excerpt from Washington’s 1899 argument about becoming a producer as well as a consumer; historical racial context is retained in the source note.

Women and Economics, Chapter VIII, Project Gutenberg #57913. Gilman rejects the contemptuous category of a “female mind,” immediately adding that the brain is not an organ of sex and comparing “female mind” to “female liver.” It is a historical equality argument embedded in Gilman’s period-specific social/evolutionary framework, not a current neuroscience citation.

The Importance of Being Earnest, Act I; Jack Worthing. Exact catalog wording is preserved in the scan-backed Samuel French acting text on Wikisource, scan leaf 26 / printed page 24.

Essays: First Series, “Friendship” (1841), verified against Project Gutenberg #2944 and the page-numbered 1907 Merrill/Turpin Essays witness in Project Gutenberg #16643, printed page 117. Emerson says “Our intellectual and active powers increase with our affection” before illustrating the claim with a scholar who finds thoughts and language when writing to a friend; it remains literary-philosophical observation rather than a quantified psychological law.

Mental Efficiency. Bennett explicitly defines the scope of his argument as mental efficiency serving self-development; this is period conduct-of-life writing rather than modern cognitive-science evidence.

The Descent of Man, and Selection in Relation to Sex, Introduction, represented by Project Gutenberg #2300. Darwin writes that 'ignorance more frequently begets confidence than does knowledge' while rejecting confident claims that human origins could never be solved by science. The frozen quotation capitalizes the clause as a standalone sentence although it appears after a colon in the witness; it remains a historical scientific argument, not a universal quantitative law about confidence.

As a Man Thinketh, “Thought and Purpose.”

Middlemarch; the narrator contrasts narrow judgment with considering a subject from several points of view.

Optimism: An Essay (1903), Project Gutenberg #31622. Keller is reflecting on her own early experience of language and education.

The Rambler, No. 103.

The Sense of Beauty (1896), Part IV, §48, ‘Expression defined,’ Project Gutenberg #26842. §48 begins on printed page 192 and §49 begins on page 198; the retained sentence occurs late in §48 after Santayana argues that expression depends on associations and on what the observer’s imagination can supply. No narrower printed page is asserted without an independently verified page break. This remains historical aesthetic/philosophical psychology, not modern intelligence testing, neuroscience or evidence that more intelligent observers always make objectively better interpretations.

The Devil’s Dictionary, entry “Education,” Project Gutenberg #972. This is a deliberately cynical comic dictionary definition and should be read as satire rather than as a literal educational theory.

The Time Machine, Project Gutenberg #35. The Time Traveller states this while speculating about the evolution of the Eloi and Morlocks; it is fictional evolutionary reasoning in a nineteenth-century scientific romance, not a current biological law.

Essay “On Books and Reading,” public-domain English text.

Ada Lovelace, Note G to her 1843 translation of Luigi Menabrea’s “Sketch of the Analytical Engine Invented by Charles Babbage.” The claim concerns the proposed Analytical Engine in its historical design context and is not generalized into a factual limit on modern AI systems.

Tao Teh King, chapter 33, James Legge translation; the chapter continues by connecting contentment with richness and steadfastness with will.

The Montessori Elementary Material (1917), Arthur Livingston translation, Part II, Reading, Chapter I, subsection “The Most Popular Books,” printed page 201, Project Gutenberg #42869. Montessori says education should supply essential instruments while preserving the child’s intellectual and emotional springs, then argues that method should assist development without repressing spontaneous activity. This is historical Montessori pedagogy rather than an experimentally established modern educational-outcome rule.

The Problems of Philosophy, Chapter XV, “The Value of Philosophy,” closing paragraph, beginning on printed page 249 / scan leaf 253 in the fully validated 1912 Williams & Norgate Wikisource scan, cross-checked against Project Gutenberg #5827. “These questions enlarge our conception of what is possible...” explains why Russell values philosophical questions even when definite answers cannot usually be established; it remains an epistemological and educational-philosophical claim rather than a measured outcome guarantee.

Counsels and Maxims, T. Bailey Saunders translation; Project Gutenberg #10715. The passage appears in an age-related comparison of intellectual powers and accumulated material.

Mysticism and Logic and Other Essays, essay “The Place of Science in a Liberal Education.” Project Gutenberg #25447. The surrounding passage describes the positive value of a scientific spirit.

The Wisdom of Life, T. Bailey Saunders translation; Project Gutenberg #10741. The simile compares a developing intellectual life with a slowly formed work of art.

The Montessori Elementary Material (1917), Arthur Livingston translation, Part IV, Geometry, Chapter I, “Plane Geometry,” beginning on printed page 260 and continuing onto page 261, Project Gutenberg #42869. Montessori links long spontaneous work with the geometric material to reasoning, character and higher cognitions within her method. The passage remains an early-twentieth-century pedagogical/developmental claim and is not presented as a universally established modern cognitive-effect estimate.

Dr. Montessori's Own Handbook. The sentence continues by connecting repeated exercises of attention and intelligence with development; it is Montessori’s pedagogical rationale for the material.