In Principia, its full title is the Mathematical Principles of Natural Philosophy

, Newton lays out his laws of motion, law of universal gravitation and an extension of Kepler's laws of planetary motion. It is a book that helped define the Age of Reason and it is Newton's most celebrated achievement.

What is the significance and importance of Principia Mathematica?

The Principia forms the foundation of classical mechanics. It is a derived form of Johannes Kepler's laws of planetary motion (which Kepler had first obtained empirically). The Principia is considered one of the most important works in the history of science.

What is the significance and importance of Principia Mathematica What do you think its influence is on our own modern age?

The Principia provided a standard for doing scientific investigations, and with his other published works, such as Opticks (1704), formed the cornerstone for the modern scientific method. It offered a coherent method that seemed free of the occult and reliance on the ancients.