Albert Einstein · John Maynard Keynes Were Albert Einstein and John Maynard Keynes alive at the same time? Yes. Albert Einstein and John Maynard Keynes were alive at the same time for 62 years, from 1883 to 1946. Albert Einstein was 4 when John Maynard Keynes was born.Albert Einstein was 67 when John Maynard Keynes died, aged 62. Albert EinsteinGerman-born theoretical physicistBorn 14 March 1879 · died 18 April 1955, aged 76John Maynard KeynesBritish economistBorn 5 June 1883 · died 21 April 1946, aged 62 Karl MarxVladimir LeninAlbert EinsteinJohn Maynard KeynesAdolf HitlerRonald ReaganNelson MandelaDonald TrumpVladimir Putin Albert Einstein and John Maynard Keynes in bold, with some of their best-known contemporaries. Drag across to see the age each reached in any year. Faded ends mark uncertain dates.