BERNSTEIN: Well, it’s no trick to make a lot of money — if all you want is to make a lot of money.

Herman J. Mankiewicz (1897–1953) American screenwriter, journalist, theater critic

Citizen Kane (1941) [with Orson Welles]
    (Source)

The script reads in the first clause (only) "make an awful lot of money."

There is still significant debate as to whether Mankiewicz or Welles should be given primary credit for the screenplay (as written and as filmed). For more, see here.