Polygon ranks five notable Snoopy quotes, arguing that his thought bubbles in the comic strips reveal a thoughtful side often missing from the television specials and films. The piece also highlights Lucy’s “Happiness is a warm puppy” as its choice for the greatest quote about Snoopy, while distinguishing that from the quotes Snoopy says himself.

The selections show how Snoopy’s voice developed after his first thought bubble appeared in 1952, when he protested Charlie Brown’s joke about his ears. They include a line representing his World War I Flying Ace adventures, reflections on reconsidering thoughts and keeping quiet when there is nothing to say, and the 1978 maxim: “Learn from yesterday. Live for today. Look to tomorrow. Rest this afternoon.” The article presents these as examples of Schulz using Snoopy for both humour and life advice.