[What day is it?:] It's today. My favorite day.

The exchange turns an ordinary question (“What day is it?”) into a gentle philosophy: the best day is not a holiday, a milestone, or a promised future, but the present moment—“today.” In the Pooh tradition, wisdom arrives through childlike literalness: by refusing to rank days by status or achievement, the speaker affirms immediacy, gratitude, and attention to what is actually happening. The line’s popularity reflects modern appetite for simple, non-technical language to express mindfulness. Whether or not Milne wrote this exact sentence, it resonates with the broader moral atmosphere of the Pooh stories: comfort, simplicity, and the value of small, present joys.