Minsky is an actor in an artificial intelligence koan (attributed to his student, Danny Hillis) from the Jargon file:

In the days when Sussman was a novice, Minsky once came to him as he sat hacking at the PDP-6.
"What are you doing?", asked Minsky.
"I am training a randomly wired neural net to play Tic-tac-toe" Sussman replied.
"Why is the net wired randomly?", asked Minsky.
"I do not want it to have any preconceptions of how to play", Sussman said.
Minsky then shut his eyes.
"Why do you close your eyes?", Sussman asked his teacher.
"So that the room will be empty."
At that moment, Sussman was enlightened.

[Edit]: What I actually said was, "If you wire it randomly, it will still have preconceptions of how to play. But you just won't know what those preconceptions are." – Marvin Minsky