
As quoted by Menabrea, Luigi (1842). Sketch of the Analytical Engine invented by Charles Babbage Esq.. Scientific Memoirs (Richard Taylor): 694.
As quoted by Rosen, Kenneth H. (2013). Discrete Mathematics and Its Applications, McGraw-Hill, ISBN 9780071315012. p.29.
As quoted by Menabrea, Luigi (1842). Sketch of the Analytical Engine invented by Charles Babbage Esq.. Scientific Memoirs (Richard Taylor): 694.
Source: On the Origin of Species (1859), chapter III: "Struggle For Existence", page 61 http://darwin-online.org.uk/content/frameset?pageseq=76&itemID=F373&viewtype=image
Context: Owing to this struggle for life, any variation, however slight and from whatever cause proceeding, if it be in any degree profitable to an individual of any species, in its infinitely complex relations to other organic beings and to external nature, will tend to the preservation of that individual, and will generally be inherited by its offspring. The offspring, also, will thus have a better chance of surviving, for, of the many individuals of any species which are periodically born, but a small number can survive. I have called this principle, by which each slight variation, if useful, is preserved, by the term of Natural Selection, in order to mark its relation to man's power of selection.
quoted in Classic Essays on Twentieth-Century Music, ISBN 0028645812
§4
Introduction to the Analysis of the Infinite (1748)
Source: Systems Engineering Tools, (1965), p. vii; as cited in: Joseph E. Kasser (2010) " Seven systems engineering myths and the corresponding realities http://www.synergio.nl/media/59286/7_myths_of_se.pdf"
Peter Bernus, Laszlo Nemes, and R. Morris (1994) " Possibilities and limitations of reusing enterprise models http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.50.1736&rep=rep1&type=pdf." IFAC Workshop, Proceedings from Intelligent Manufacturing Systems.
Introduction to "Cliff and the Calories," in Expanded Universe, (1980), pg. 355
Source: Enterprise modeling within an enterprise engineering framework (1996), p. 993