Peanuts by Charles Schulz for July 18, 1959
Transcript:
Schroeder yells at Lucy, who is leaning on his piano, "I wouldn't marry you unless you were the last girl on Earth!"(BR) (BR) Lucy asks, "Did you say, 'If' or 'Unless'?"(BR) (BR) Schroeder replies, "I admit I said, 'Unless'..."(BR) (BR) Schroeder falls over as Lucy shouts, "HOPE!"(BR) (BR)
Hope springs delusion!