|quote= }}</ref><ref>{{cite book |title= The Nature of the Physical World: Gifford Lectures|author=Arthur Eddington |publisher=Cambridge University Press |year=1927, 2012 |pages=80, 295 |isbn=9781107663855 |url=http://books.google.com/books?id=MRPCG8qgnUAC&printsec=frontcover&dq=Eddington+the+nature+of&hl=en&sa=X&ei=kAbXUdT8JdSk4ATwooGAAg&ved=0CCsQ6AEwAA#v=snippet&q=time's%20arrow&f=false}}</ref>
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|quote= }}</ref><ref>{{cite book |title= The Nature of the Physical World: Gifford Lectures|author=Arthur Eddington |publisher=Cambridge University Press |year=1927, 2012 |pages=80, 295 |isbn=9781107663855 |url=https://books.google.com/books?id=MRPCG8qgnUAC&printsec=frontcover&dq=Eddington+the+nature+of&hl=en&sa=X&ei=kAbXUdT8JdSk4ATwooGAAg&ved=0CCsQ6AEwAA#v=snippet&q=time's%20arrow&f=false}}</ref>