MUDD: Yes, well, I organised a technical information service bringing modern industrial techniques to backward planets, making available certain valuable patents to struggling young civilisations throughout the galaxy.
KIRK: Did you pay royalties to the owners of those patents?
MUDD: Well, actually, Kirk, as a defender of the free enterprise system, I found myself in a rather ambiguous conflict as a matter of principle.
SPOCK: He did not pay royalties.
MUDD: Knowledge, sir, should be free to all.
KIRK: Who caught you?
MUDD: That, sir, is an outrageous assumption.
KIRK: Yes. Who caught you?
MUDD: I sold the Denebians all the rights to a Vulcan fuel synthesiser.
KIRK: And the Denebians contacted the Vulcans.
MUDD: How'd you know?
KIRK: That's what I would have done.