Nicolaus Copernicus "Almagest" circa 150 CE; the Earth was the stationary center of the universe. Stars were embedded in a large outer sphere which rotated rapidly, approximately daily, while each of the planets, the Sun, and the Moon were embedded in their own, smaller spheres. Ptolemy's system employed devices, including epicycles, deferents and equants, to account for observations that the paths of these bodies differed from simple, circular orbits centered on the Earth. Copernicus' major work on his heliocentric theory was "Dē revolutionibus orbium coelestium" ("On the Revolutions of the Celestial Spheres"), published in the year of his death, 1543. He had
The Wretched of the Earth aspects of the violence and response to violence necessary for total decolonization. He also offers cautions about several different approaches to that violence. In the essay, "On National Culture" published in "The Wretched of the Earth", Fanon sets out to define how a national culture can emerge among the formerly and, at the time of its release in 1961, still-colonized nations of Africa. Rather than depending on an orientalized, fetishized understanding of precolonial history, Fanon argues a national culture should be built on the material resistance of a people against colonial domination. Fanon narrates the essay with reference to what