Here are some of the key themes that emerge:
* The transformative power of travel: Hazlitt argues that travel, especially on foot, allows us to break free from routine and experience the world with fresh eyes. It disrupts our preconceptions and forces us to engage with new perspectives, leading to personal growth and a deeper understanding of ourselves.
* The importance of solitude and contemplation: Hazlitt emphasizes the value of solitude during travel, allowing for reflection and the appreciation of the natural world. He suggests that it is in these moments of quiet contemplation that we can truly connect with our inner selves.
* The joys of unexpected encounters: Hazlitt celebrates the serendipitous encounters and conversations that can occur on a journey. These interactions, however fleeting, offer a glimpse into the lives of others and expand our understanding of human nature.
* The beauty of the ordinary: Hazlitt suggests that travel can help us appreciate the beauty and significance of everyday things, often overlooked in our busy lives. He finds fascination in the details of the landscape and the simple joys of nature.
* The value of experience over knowledge: While Hazlitt acknowledges the importance of learning, he emphasizes the power of direct experience. He believes that travel, through its sensory and emotional impact, provides a more profound understanding of the world than any book could offer.
Therefore, the "main theme" of "On Going a Journey" can be summarized as the transformative power of travel as a means of self-discovery, appreciation of the world, and understanding human nature.