“In the emerging picture of mankind in the universe, the future (if it exists) will surely entail discoveries about space and time which will open up whole new perspectives in the relationship between mankind, mind, and the uni-verse.… But what is now? There is no such thing in physics; it is not even clear that ‘now’ could ever be described, let alone explained, in terms of physics.… Notions such as ‘the past,’ ‘the present’ and ‘the future’ seem to be more linguistic than physical.… There is no universal now, but only a personal one—a ‘here and now.’ This strongly suggests that we look to the mind, rather than to the physical world, as the origin of the division of time into past, present, and future.…There is none of this in physics.… No physical experiment has ever been performed to detect the passage of time. As soon as the objective world of reality is considered, the passage of time disappears like a ghost into the night.”

Source: Liber Null & Psychonaut (1987), p. 151
Context: Physical processes alone will never completely explain the existence of the universe, life, and consciousness. Religious answers are just wishful thinking and wanton fabrication cast over a bottomless pit of ignorance. To explain their occult and mystical experiences, magicians are forced to develop models beyond the scope of materialistic or religious systems.

Source: Legal foundations of capitalism. 1924, p. 25

Source: The mystery of life : you are the light, and that's indestructible truth, Tencl, Jakub,, 9781512399882, [United Kingdom? https://www.worldcat.org/oclc/914353319,, 914353319]

"Eliot and Conservatism" (p. 208)
A Political Philosophy (2006)

Letter to Besso's family (March 1955) following the death of Michele Besso, as quoted in Disturbing the Universe (1979) by Freeman Dyson Ch. 17 "A Distant Mirror", p. 193
Sometimes misquoted as "Reality is merely an illusion, albeit a very persistent one."
1950s
Variant: "He has departed from this strange world a little ahead of me. That means nothing. For us believing physicists, the distinction between past, present and future is only a stubborn illusion." Quoted in Einstein: His Life and Universe by Walter Isaacson (2008), p. 540 http://books.google.com/books?id=cdxWNE7NY6QC&lpg=PP1&pg=PA540#v=onepage&q&f=false.
Variant: "Now he has departed from this strange world a little ahead of me. That signifies nothing. For us believing physicists, the distinction between past, present, and future is only a stubbornly persistent illusion." Quoted in Albert Einstein: The Miracle Mind by Tabatha Yeatts (2007), p. 116 http://books.google.com/books?id=XiyyVYvQBKQC&lpg=PP1&pg=PT114#v=onepage&q&f=false.
Variant: "In quitting this strange world he has once again preceded me by a little. That doesn't mean anything. For those of us who believe in physics, this separation between past, present, and future is only an illusion, however tenacious." Quoted in The Structure of Physics by Carl Friedrich von Weizsäcker (1985), p. 288 http://books.google.com/books?id=DeexONN0zDgC&lpg=PR2&pg=PA288#v=onepage&q&f=false.
Variant: "Now he has departed a little ahead of me from this quaint world. This means nothing. For us faithful physicists, the separation between past, present, and future has only the meaning of an illusion, though a persistent one." Quoted in Einstein and Religion by Max Jammer (2002), p. 161 http://books.google.com/books?id=TnCc1f1C25IC&lpg=PP1&pg=PA161#v=onepage&q&f=false.
Variant: "Now he has preceded me by a little bit in his departure from this strange world as well. This means nothing. For those of us who believe in physics, the distinction between past, present, and future is only an illusion, however tenacious this illusion may be." Quoted in Einstein: A Biography by Jürgen Neff (2007), p. 402 http://books.google.com/books?id=B8K6n177ZwcC&lpg=PP1&pg=PA402#v=onepage&q&f=false

Diederik Aerts (2001) " Time, space and reality : an analysis from physics. http://www.vub.ac.be/CLEA/aerts/publications/2001TimeSpaceReality.pdf"

"What must be an essential feature of any future fundamental physics?" Letter to Max Born (March 1948); published in Albert Einstein-Hedwig und Max Born (1969) "Briefwechsel 1916-55"<!-- p. 223 Nymphenburger, Munich-->, and in Potentiality, Entanglement and Passion-at-a-Distance: Quantum Mechanical Studies for Abner Shimony, Volume Two edited by Robert Cohen, Michael Horn, and John Stachel (1997), p. 121 http://books.google.com/books?id=DsNoIcQemTsC&lpg=PP1&pg=PA121#v=onepage&q&f=false
1940s

Source: The Seth Material (1970), p. 127

The Blackfoot Physics (2006)