[Seismology and plate tectonics, 1990, http://books.google.com/books?id=tZRxPzwoChIC&pg=PA5] (p. 5)
Seismology and Plate Tectonics (1990)
“It is not theory, but actual statistical experience, which forces us to the conclusion that, however little we know of what will happen in the individual instance, yet the frequency of a large number of instances is distributed round the mode in a manner more and more smooth and uniform the greater the number of individual instances. When this distribution round the mode does not take place... then we assert that some cause other than chance is at work.”
"The Chances of Death" (1895)
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Karl Pearson 65
English mathematician and biometrician 1857–1936Related quotes

Source: 1850s, An Investigation of the Laws of Thought (1854), p. 370

‘Boxing’, Political Register (10 August 1805), p. 195
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Source: Books, Spiritual Warrior IV: Conquering the Enemies of the Mind (Hari-Nama Press, 2004), Chapter 3

“Madness, like small fish, runs in hosts, in vast numbers of instances.”
Page 236
The Transmigration of Timothy Archer (1982)