Epicurian

In the story of "The List," Epicurian philosophy can be found. The note of things to do which Toad creates can be seen as the God and Goddesses of Roman religion. To Epicurus, they would not bother to pay attention to the mortal world, and so mortals should not rely on the Gods to do everything for them. Toad relied on the note to tell him what to do, and when it abandoned him by blowing away in the wind, he was lost and just sat doing nothing. Therefore, it can be tied back to Epicurian philosophy, by saying that the note, like the Gods, should not have so much devotion placed into it, and that people should be more independent. Another Epicurian theme from Frog and Toad was the story "Cookies." It taught that overindulgence that makes you happy is a good thing, but if it is not permanent, then the pleasure is not real. Epicurus did not want overindulgence of food to be part of his philosophy, but people somehow connected it to that over the years. At the end of the story however, toad was not happy.
A third story, called "It's Mine," showed that true please came from sharing and enjoying the time you had with others. Before, the three frogs of the story would always be greedy and bicker, some Epicurian philosophy discouraged, but when they worked together, they were much happier. So the story reinforced the idea of unnecessary pleasure and true pleasure.