1. Simplicity: The frog is depicted as a simple creature who lives in a "ditch" and is content with his surroundings. He is not bothered by the complexities of the world and is able to find happiness in the simple things in life, such as the beauty of the night sky.
2. Humility: The frog is humble and does not seek attention or recognition. He is content to live in the background and does not envy the nightingale's fame and talent.
3. Appreciation of Beauty: Despite his simplicity, the frog has a deep appreciation for beauty and is moved by the nightingale's song. He is able to recognise and appreciate the talent of others and is not jealous or envious of their success.
4. Contrast to the Nightingale: The frog serves as a contrast to the nightingale, who is a symbol of artistic genius and striving for perfection. While the nightingale is talented and ambitious, the frog is humble and content. This contrast highlights the different ways in which people can approach life and find fulfilment.
5. Symbolism: The frog is often used as a symbol of transformation and rebirth, and in this poem, he represents the transformation of the common man into an artist. Through his encounter with the nightingale, the frog is inspired to create his own art and express his emotions and experiences.
Overall, the frog in Vikram Seth's poem represents the simple, humble, and appreciative nature of the common man, who finds beauty in the everyday and is inspired by the artistry and talent of others.