Principia

Father of calculus and gravity's discoverer Issac Newton's handwritten notes, which are revisions to his masterwork "Mathematical Principles of Natural Philosophy", will be up for auction in London on July 8. As per auction company Christie's, Newton's work could fetch as much as $1.3 million. The book, published in 1687, contain laws of gravitation and motion, and its first edition was auctioned for $3.7 million in 2016.