John McTaggart 1866 – 1925

John McTaggart Ellis McTaggart was a British metaphysician and the leading defender of absolute idealism in early-twentieth-century Cambridge philosophy. A fellow of Trinity College, where his pupils included Bertrand Russell and G. E. Moore, he produced the two-volume Nature of Existence, which argued that the universe is ultimately a society of persons bound together by love. He is best known today for his short paper The Unreality of Time, which distinguished the A-series and B-series of temporal predicates and argued that any coherent account of temporal change requires both, and yet that no such account is possible.