Abraham Pais (May 19, 1918 - ) is a Dutch-born physicist best known for his biography of Albert Einstein, Subtle is the Lord, Oxford (1982). He has also written a history of physics in the 20th century, Inward Bound, Oxford (1986). His autobiography A Tale of Two Continents, Princeton (1997) refers to the 'esemplastic power of the imagination' (p. 77).