La ciencia de la caballería andante

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La Caballería andante (...) es una ciencia, dijo Don Quijote (...) que encierra en sí todas o las más ciencias del mundo (...) el que la profesa ha de ser jurisperito, y saber las leyes de la justicia distributiva y conmutativa (...) ha de ser teólogo, para saber dar razón de la cristiana ley que profesa (...); ha de ser médico, principalmente herbolario, parara conocer (...) las yerbas que tienen virtud de sanar las heridas (...); ha de ser astrólogo, para conocer por las estrellas cuántas horas son pasadas la noche (...); **ha de saber las matemáticas, porque a cada paso se le ofrecerá tener necesidad de ellas (...).**

Knight-errantry (…) is a science, said Don Quixote (…) that comprehends in itself all or most of the sciences of the world, for he who professes it must be a jurist, and must know the rules of justice, distributive and equitable (…) he must be a theologian, so as to be able to give a clear and distinctive reason for the Christian faith he professes (…); must be a physician, and above all a herbalist, so as (…) to know the herbs that have the property of healing wounds (…); he must be an astronomer, so as to know by the stars how many hours of the night have passed (…) ** He must know mathematics for at every turn some occasion for them will present itself to him (…) **

Miguel de Cervantes Saavedra El Ingenioso Hidalgo Don Quijote de La Mancha Second part, Chapter XVIII, Madrid 1615

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Professor at Northeastern University. Working on Complex Systems, Social Networks and Urban Science.