Alfred North Whitehead (18681-1947) was an English mathematician and philosopher. He is best known as the defining figure of the philosophical school known as process philosophy, which has been applied to a variety of disciplines, including ecology, theology, education, physics, biology, economics, and psychology. He was educated at Cambridge University in England and later became a professor of philosophy at Harvard University. Early in his career Whitehead wrote primary on mathematics, logic, and physics. His most notable work is the three-volume “Principia Mathematica” which he wrote with former student Bertrand Russell, and was published in 1910-1913. His book, “Science and the Modern World, ” published in 1925, is based on a series of lectures he presented in February of 1925, although with some revisions and additions.