"Here's looking at you, kid" — Casablanca (1942)

"Here's looking at you, kid" distills an entire romance into five syllables — a lament that refuses to age. Humphrey Bogart partly improvised the line while teaching Ingrid Bergman poker between Casablanca takes, and it has since become the most romantically resonant farewell in cinema history. The American Film Institute ranked it #1 on its 100 Greatest Movie Quotes list in 2005, outperforming #2's iconic "May the Force be with you" by securing 94% of the popular vote. Its longevity is measurable: 83 million Google searches since 2004 attest to a cultural half-life that rivals any love poem.