Jacques Dorsan was born December 22, 1912, in Orléans, France. In 1936, he moved to Côte d'Ivoire, West Africa, where he drew his first horoscope with his index finger on the sand at Grand Bassam beach a little before sunrise, when the planet Mercury was visible. It took him more than seven years before he began to do consultations. Fourteen years later, after intense practice in Brazil and before returning to France, he had become convinced that the houses actually move in the direction opposite the zodiacal signs. He put his idea to the test for more than twenty years before publishing the original version of his book Le véritable sens des maisons astrologiques (1984), now published in English by Lindisfarne Books. Jacques Dorsan also lived in Morocco, New York City, Monaco, Luxembourg, Belgium, Zaire, and New Caledonia. He died September 8, 2005, in Nice, survived by his wife.