The Principia: The Authoritative Translation: Mathematical Principles of Natural Philosophy History_Gift_Guide husband-and-wife team Nate and Kaley

husband-and-wife team Nate and Kaley Klemp pinpoint exactly what's not working in modern marriage

accessible steps for ensuring physical and mental longevity

“Sensationally good—new

but instead of the idyllic life she imagined with her true love

The Principia: The Authoritative Translation: Mathematical Principles of Natural Philosophy History_Gift_Guide husband-and-wife team Nate and KaleyIn his monumental 1687 work, Philosophiae Naturalis Principia Mathematica, known familiarly as the Principia, Isaac Newton laid out in mathematical terms the principles of time, force, and motion that have guided the development of modern physical science. Even after more than three centuries and the revolutions of Einsteinian relativity and quantum mechanics, Newtonian physics continues to account for many of the phenomena of the observed world, and