The line comes from Star Wars: Episode V - The Empire Strikes Back, released in 1980. Just before Han Solo is frozen in carbonite, Princess Leia tells him she loves him and he answers simply, I know. Harrison Ford famously shaped the reply during filming, turning what could have been a conventional romantic exchange into a defining character moment. The scene became one of the most quoted in the saga, endlessly referenced in parodies, merchandise, and later Star Wars stories, and the short audio survives online as a universal shorthand for cool confidence.