BYTE Interview With Richard Stallman (1986)(gnu.org)

  "I think it is important to say that information is different from material
  objects like cars and loaves of bread because people can copy it and share it
  on their own and, if nobody attempts to stop them, they can change it and make
  it better for themselves. That is a useful thing for people to do. This isn't
  true of loaves of bread. If you have one loaf of bread and you want another,
  you can't just put your loaf of bread into a bread copier. You can't make
  another one except by going through all the steps that were used to make the
  first one. It therefore is irrelevant whether people are permitted to copy
  it—it's impossible."

  "If you imagined that we lived like on the moon, and everything--you know, we
  had to get like air in pipes, and paid for the air, right? People could charge
  for smells. People could charge for good smells, right? And so it would seem
  reasonable for smells to be property. But now, you walk by restaurant, and you
  smell this delicious smell, you get this like free boost--for nothing! And
  like, I think the record labels are like these people who are from the moon,
  right? And they used to be able to sell these things because the only way you
  could get them was through their channel. But now, files move around like smells.
  And it's not convenient to charge for them. Ultimately this stuff is
  pragmatic. I realize that doesn't sound very principled, but historically it
  seems to be the way things work."