p, 125 
"On the Harmony of Theory and Practice in Mechanics" (Jan. 3, 1856)
                                    
“There have been applied sciences throughout the ages. … However this so-called practice was not much more than paper in nearly all of these cases, and the various applied sciences were only lacking a bagatelle, namely proper scientific practice. The applied sciences show the application of theoretic doctrines in existing events; but that is precisely what it does, it merely shows. Whereas the scientific practice autonomously puts to use these theories.”
in his review of Joseph Beskiba's textbook, published in the Österreichische Blätter für Literatur und Kunst (September 7, 1844), as quoted by [Peter Schuster, Moving the stars: Christian Doppler, his life, his works and principle, and the world after, Living edition, 2005, 3901585052, 78]
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Christian Doppler 1
mathematician, physicist 1803–1853Related quotes
                                        
                                        Revue Scientifique (1871) 
Variant translation: There are no such things as applied sciences, only applications of science.
                                    
Source: Statistical Method from the Viewpoint of Quality Control, 1939, p. 120
                                        
                                        p, 125 
"On the Harmony of Theory and Practice in Mechanics" (Jan. 3, 1856)
                                    
“Natural science is throughout either a pure or an applied doctrine of motion.”
                                        
                                        Preface, Tr. Bax (1883) 
(1786)
                                    
Lecture on "Electrical Units of Measurement" (3 May 1883), published in Popular Lectures Vol. I, p. 73, as quoted in The Life of Lord Kelvin (1910) by Silvanus Phillips Thompson
                                        
                                        [describing the historical causes of the modern tendency to make intellect the servant of alien interests] 
The Integrity of the Intellect (July 1920)
                                    
                                        
                                        Letter to Henrietta Jevons (28 February 1858), published in Letters and Journal of W. Stanley Jevons (1886), edited by Harriet A. Jevons, his wife, p. 101. 
Context: You will perceive that economy, scientifically speaking, is a very contracted science; it is in fact a sort of vague mathematics which calculates the causes and effects of man's industry, and shows how it may be best applied. There are a multitude of allied branches of knowledge connected with mans condition; the relation of these to political economy is analogous to the connexion of mechanics, astronomy, optics, sound, heat, and every other branch more or less of physical science, with pure mathematics.