Dialogue concerning the two chief world systems, Ptolemaic and Copernican

In the year 1632, Galileo Galilei wrote this book called "Dialogue", arguing that the Earth rotates around the Sun instead of the vice versa as described in religious scriptures. Within a year, his book was banned and Galileo was kept under house arrest till his death in 1642.


"Take note, theologians, that in your desire to make matters of faith out of propositions relating to the fixity of sun and earth, you run the risk of eventually having to condemn as heretics those who would declare the earth to stand till and the sun to change position - eventually, I say, at such a time as it might be physically or logically proved that the earth moves and the sun stands still."

- Galileo Galilei, Dialogue (1632)