With sjm's clue, I found:
"The British author George Orwell, pen name for Eric Blair ,
achieved prominence in the late 1940's as the author of two
brilliant satires. He wrote documentaries , essays, and criticism
during the 1930's and later established him as one of the most
important and influential voices of the century.

"On each landing, opposite the lift shaft, the poster with the
enormous face gazed down from the wall. It was one of these
pictures which are so contrived that the eyes follow you about
when you move BIG BROTHER IS WATCHING YOU, the caption beneath ran." - from Nineteen
Eighty-Four"