Francis Galton

“{{gutenberg author| id=Francis+Galton | name=Francis Galton}}”

“Portraits of Galton from the National Portrait Gallery (UK)”

“Galton's Complete Works at Galton.org”

“The Galton laboratory homepage at University College London”

“Biography and bibliography in the Virtual Laboratory of the Max Planck Institute for the History of Science”

“Adolphe Quetelet”

“It took Francis Galton several years to figure out that correlation and regression are not two concepts – they are different perspectives on the same concept. The general rule is straightforward but has surprising consequences: whenever the correlation between two scores is imperfect, there will be regression to the mean.”

“Francis Galton discovered the concept of correlation in the late fall of 1888. [...] To Galton, correlation meant what we might call today intraclass correlation—two variables are correlated because they share a common set of influences. [...] Galton seems to have only conceived of correlation as a positive relationship; negative correlations play no role in his discussions.”

“Galton [...] combined analysis and mathematical techniques to great effect, and in so doing, brought many new facts to light. [...] it is part of a grand tradition that, especially in the fields of sociology and psychology, has unleashed a great many intriguing and clever experiments.”

“William R. Charlesworth, “Comments on S.L. Washburn's review of Kenneth Bock's Human Nature and History: A Response to Sociobiology” Human Ethology Newsletter (Volume 3, Issue 3, September 1981), p.22”

“I am disposed then, like a great many anthropologists, to believe more in nature than in nurture, more in heredity than in education. Once, at a soiree of the Royal Society, I spied, near together, two of my friends—Francis Galton, apostle of heredity, and Sir Joshua Fitch, prominent educationist. A wicked idea entered my head. I introduced the two, and stood by to watch the inevitable conflict. It was most instructive and diverting. The last thing I heard was Fitch saying in a plaintive tone, But if all you say is correct, what’s the use of me?”

“All the formulæ of Conic Sections having long since gone out of my head, I went on my return to London to the Royal Institution to read them up. Professor, now Sir James Dewar, came in and probably noticing signs of despair in my face, asked me what I was about; then said, "Why do you bother over this? My brother in law, J. Hamilton Dickson of Peterhouse, loves problems and wants new ones. Send it to him." I did so... and he most cordially helped me by working it out... on the basis of the... Gaussian Law of Error.”

“After much consideration and many inquiries, I determined, in 1885, on experimenting with sweet peas, which were suggested to me both by Sir Joseph Hooker and by Mr. Darwin. ...The result clearly proved Regression; the mean Filial deviation was only one-third that of the parental one, and the experiments all concurred. The formula that expresses the descent from one generation of a people to the next, showed that the generations would be identical if this kind of Regression was allowed for.”

“The following question had been much in my mind. How is it possible for a population to remain alike in its features, as a whole, during many successive generations, if the average produce of each couple resemble their parents? Their children are not alike but vary...”

“As these lines are being written, the circumstances under which I first clearly grasped the important generalisation that the laws of Heredity were solely concerned with deviations expressed in statistical units, are vividly recalled to my memory. It was in the grounds of Naworth Castle, where an invitation had been given to ramble freely. A temporary shower drove me to seek refuge in a reddish recess in the rock by the side of the pathway. There the idea flashed across me, and I forgot everything else for a moment in my great delight.”

“All male animals, including men, when they are in love, are apt to behave in ways that seem ludicrous to bystanders.”

“A really intelligent nation might be held together by far stronger forces than are derived from the purely gregarious instincts. A nation need not be a mob of slaves, clinging to one another through fear, and for the most part incapable of self-government, and begging to be led; but it might consist of vigorous self-reliant men, knit to one another by innumerable ties, into a strong, tense, and elastic organisation.”

“I have already spoken in Hereditary Genius of the large effects of religious persecution in comparatively recent years, on the natural character of races, and shall not say more about it here; but it must not be omitted from the list of steady influences continuing through ancient historical times down, in some degree, to the present day, in destroying the self-reliant, and therefore the nobler races of men.”

“A collection of living magnates in various branches of intellectual achievement is always a feast to my eyes; being, as they are, such massive, vigorous, capable-looking animals.”

“There is a steady check in an old civilisation upon the fertility of the abler classes: the improvident and unambitious are those who chiefly keep up the breed. So the race gradually deteriorates, becoming in each successive generation less fit for a high civilisation.”