This sentence is false. "This sentence" = "This sentence is false." [This sentence is false] is false. "This sentence" = "This sentence is false is false."

This sentence is false. "This sentence" = "This sentence is false." [This sentence is false] is false. "This sentence" = "This sentence is false is false." [This sentence is false is false] is false. "This sentence" = "This sentence is false is false is false." [This sentence is false is false is false] is false. ...