Galileo Galilei, the Italian astronomer, physicist, engineer, philosopher and mathematician, played a major role in the scientific revolution of the seventeenth century. His discoveries with the telescope revolutionised astronomy and paved the way for the acceptance of the Copernican heliocentric system, while his formulation of the law of falling bodies and parabolic trajectories marked the beginning of a fundamental change in the study of motion. This comprehensive eBook presents Galileo's collected works, with numerous illustrations, rare texts appearing in digital print for the first time, informative introductions and the usual Delphi bonus material. (Version 1)