André-Marie Ampè, in André-Marie Ampère: Enlightenment and Electrodynamics http://books.google.co.in/books?id=QWZKQWB-sbQC&pg=PA159, Cambridge University Press, 1996, p. 159
“There is synthesis when, in combining therein judgments that are made known to us from simpler relations, one deduces judgments from them relative to more complicated relations. There is analysis when from a complicated truth one deduces more simple truths.”
André-Marie Ampère in: André-Marie Ampère: Enlightenment and Electrodynamics http://books.google.co.in/books?id=QWZKQWB-sbQC&pg=PA158, Cambridge University Press, 1996, p. 158.
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André-Marie Ampère 3
French physicist and mathematician 1775–1836Related quotes
“The truth is too simple: one must always get there by a complicated route.”
                                        
                                        Le vrai est trop simple, il faut y arriver toujours par le compliqué. 
Letter to Armand Barbès, (12 May 1867), published in Georges Lubin (ed.) Correspondance (Paris: Garnier Freres, 1964-95) vol. 20, p. 412; Bruce Kajewski Traveling with Hermes (Amherst: University of Massachusetts Press, 1992) p. 32
                                    
“Memory is a complicated thing, a relative to truth, but not its twin.”
Source: DNA: The Story of the Genetic Revolution (2003/2017), Chapter 9, “Reading Genomes: Evolution in Action” (p. 242)
Source: The Urban Question: A Marxist Approach, 1977, p. 216
                                        
                                        Source: The Character of Physical Law (1965), chapter 2, “ The Relation of Mathematics to Physics http://www.youtube.com/watch?v=M9ZYEb0Vf8U” referring to the law of conservation of angular momentum 
Context: Now we have a problem. We can deduce, often, from one part of physics like the law of gravitation, a principle which turns out to be much more valid than the derivation. This doesn't happen in mathematics, that the theorems come out in places where they're not supposed to be!