In the poem 'On the Grasshopper and Cricket', the poet John Keats celebrates the music of the Earth. He finds beauty in hot summer as well as in the cold winter. Here, in this poem, the grasshopper is a symbol of hot summer and cricket is a symbol of cold winter.
The moral of the poem On the Grasshopper and the Cricket is that nature has perseverance as well as patience. It keeps its jovial nature alive even during the harsh weathers i.e. summer and winter. ... The poet is thus trying to show the importance of each and every element of nature.