I'm an idealist without illusions.
Source, in full
Comment about JFK by Jacqueline Kennedy Onassis as quoted in the Audiobook Jacqueline Kennedy: Historic Conversations on Life with John F. Kennedy (December 27, 2011) by Caroline Kennedy (Author, Narrator), Michael Beschloss (Author, Narrator), Jacqueline Kennedy (Narrator) & Arthur M. Schlesinger Jr. (Narrator) and published by Hyperion AudioBooks.