Nobel laureate Steven Weinberg has written that "all that has happened since 1687 is a gloss on the <i>Principia</i>." Now you too can appreciate the significance of this stellar work, regarded by many as the greatest scientific contribution of all time. Despite its dazzling reputation, Isaac Newton's <i>Philosophiae Naturalis Principia Mathematica</i>, or simply the <i>Principia</i>, remains a mystery for many people. Few of even the most intellectually curious readers, including professional scientists and mathematicians, have actually looked in the <i>Principia </i>or appreciate its contents. Mathematician Pask seeks to remedy this deficit in this accessible guided tour through Newton's masterpiece. <br><br>Using the final edition of the <i>Principia</i>, Pask clearly demonstrates how it sets out Newton's (and now our) approach to science; how the framework of classical mechanics is established; how terrestrial phenomena like the tides and projectile motion are explained; and how we can understand the dynamics of the solar system and the paths of comets. He also includes scene-setting chapters about Newton himself and scientific developments in his time, as well as chapters about the reception and influence of the <i>Principia </i>up to the present day.