Galileo Galilei was born in Pisa (then part of the Duchy of Florence), Italy, on 15 February 1564, the first of six children of Vincenzo Galilei, a famous lutenist, composer, and music theorist, and Giulia (née Ammannati), who had married in 1562. Galileo became an accomplished lutenist himself and would have learned early from his father a scepticism for established authority, the value of well-measured or quantified experimentation, an appreciation for a periodic or musical measure of time or rhythm, as well as the results expected from a combination of mathematics and experiment. Three of Galileo's five siblings survived infancy. The youngest,
Galileo Galilei mondo) in 1632. Despite taking care to adhere to the Inquisition's 1616 instructions, the claims in the book favouring Copernican theory and a non Geocentric model of the solar system led to Galileo being tried and banned on publication. Despite the publication ban, Galileo published his "Discourses and Mathematical Demonstrations Relating to Two New Sciences" ("Discorsi e Dimostrazioni Matematiche, intorno a due nuove scienze") in 1638 in Holland, outside the jurisdiction of the Inquisition. Galileo's main written works are as follows: Footnotes Citations Biography Galileo and the Church Galileo Galilei Galileo Galilei (; 15 February 1564 – 8 January 1642)