What we wanted to preserve was not just a good environment in which to do programming, but a system around which fellowship could form. We knew from experience that the essence of communal computing, as supplied by remote-access, time-shared machines, is not just to type programs into a terminal instead of a keypunch, but to encourage close communication.
In a 1980 lecture "The Evolution of the UNIX Time-sharing System", as quoted in Christopher Negus, Linux Bible 2010 Edition (2010)