"A result of astonishing scholarship and collaboration among a wide group of talented people." -- Psychological Reports

"Cohen and Whitman's translation deserves to become the new standard. . . . " -- Physics Today

"Copes ably with puzzles of Newtonian commentary. . .[A] new and handsome edition." -- London Review of Books

"Will be of interest to a wide scientific and scholarly audience…the new translation flows smoothly and elegantly." -- Times Higher Education Supplement