Newtonian Studies was the last book by Alexandre Koyré (1892-1964), one of the great twentieth-century historians of scientific thought. The book is made up of a number of independent articles that revolve around some aspects of the scientific thinking of the founder of modern physics Isaac Newton (1643-1727). The original English edition of this work was published in 1965 by Chapman and Hall in London. The reader will not fail to notice the deep rhetorical significance of the title. In describing these studies as Newtonian, he encapsulates a decisive period of scientific thought—the period of modern science—with a name signifying modern scientific thought.