over says, "We set sail on this new sea because there is new  knowledge to be gained and new rights to be won and they must be won  and used for the progress of all mankind." President Kennedy in  actuality, said, "...used for the progress of all people." Director  Al Reinert, using creative license, decided to splice President  Kennedys words, dubbing "mankind" over "people," using a part of  the Presidents speech earlier on in his address.