Diane Keaton and Woody Allen in Annie Hall (1977)
"After that it got pretty late, and we both had to go, but it was great seeing Annie again. I... I realized what a terrific person she was, and... and how much fun it was just knowing her; and I... I, I thought of that old joke, y'know, the, this... this guy goes to a psychiatrist and says, "Doc, uh, my brother's crazy; he thinks he's a chicken." And, uh, the doctor says, "Well, why don't you turn him in?" The guy says, "I would, but I need the eggs." Well, I guess that's pretty much now how I feel about relationships; y'know, they're totally irrational, and crazy, and absurd, and... but, uh, I guess we keep goin' through it because, uh, most of us... need the eggs."