
Flying Lessons https://www.faasafety.gov/files/gslac/library/documents/2009/Jan/31383/FLYING%20LESSONS%20090108.pdf, Federal Aviation Administration (8 January 2008)
Variant translation: Artificial flight may be defined as that form of aviation in which a man flies at will in any direction, by means of an apparatus attached to his body, the use of which requires the dexterity of the user.
The Romance of Aeronautics (1912)
Context: Artificial flight may be defined as that form of aviation in which a man flies at will in any direction by means of an apparatus attached to his body, the use of which requires personal skill. Artificial flight by a single individual is the proper beginning for all species of artificial flight, as the necessary conditions can most easily be fulfilled when man flies individually.
Flying Lessons https://www.faasafety.gov/files/gslac/library/documents/2009/Jan/31383/FLYING%20LESSONS%20090108.pdf, Federal Aviation Administration (8 January 2008)
Source: The Psychology of Personal Constructs, 1955, p. 831
Source: Systems Thinking, Systems Practice, 1981, p. 223 as cited in: Gillian Ragsdell, Daune West, Jennifer Wilby (2002) Systems Theory and Practice in the Knowledge Age. p. 82. In the original quote Checkland summarised his earlier work with Smyth published in 1976.
Pharmacokinetics: Basic Principles and Its Use as a Tool in Drug Metabolism, p. 199 in Drug Metabolism and Drug Toxicity, Mitchell JR, Horning MG, editors, Raven Press, New York, 1984.
Srimad Bhagavatam, Bhaktivedanta Book Trust, 1999. Canto 3, Chapter 31, verse 41, purport. Vedabase http://www.vedabase.com/en/sb/3/31/41
Quotes from Books: Loving God, Quotes from Books: Regression of Women's Rights
Z. Hanfi, trans., in The Fiery Brook (1972), p. 66
Towards a Critique of Hegel’s Philosophy (1839)