Whitehead explains in broad terms what mathematics is about, what it does, and how mathematicians do it.Generations of readers who have stayed with the philosopher from the beginning to the end have found themselves amply rewarded for taking this journey. As The New York Times observed decades ago, "Whitehead doesn't popularize or make palatable; he is simply lucid and cogent ... A finely balanced mixture of knowledge and urbanity .... Should delight you."