Alfred North Whitehead

Born in Ramsgate, England, in 1861, Alfred North Whitehead studied at Trinity College, Cambridge, and spent many years teaching mathematics there. He first became widely known for his work in logic and the foundations of mathematics, especially his collaboration with Bertrand Russell on Principia Mathematica, a major early-20th-century attempt to ground mathematics in formal logic.

In the 1920s he moved to the United States to teach philosophy at Harvard. There he developed the ideas for which he is best remembered today: a sweeping philosophical vision that treated reality not as a collection of fixed things, but as an ongoing process of change and relationship. That approach later became known as process philosophy.

Whitehead's writing can be demanding, but his central concerns were broad and human: how science, metaphysics, religion, and experience fit together. Books such as Science and the Modern World and Process and Reality made him one of the distinctive philosophical voices of his era, and his influence has reached well beyond philosophy into theology, education, and ecology.