Here are some key reasons for his writing:
* Social Commentary: Blake was a passionate advocate for social justice and equality. He saw London as a place of great wealth and power, but also of immense poverty and suffering. Through "London," he aimed to shed light on the plight of the poor, the exploited, and the oppressed.
* Criticism of Institutions: Blake was critical of institutions such as the Church and the government, which he felt were complicit in perpetuating inequality and injustice. He uses the poem to criticize the Church's hypocrisy and the government's apathy towards the suffering of the poor.
* Humanity's Plight: Blake was concerned with the spiritual and emotional well-being of individuals. He saw London as a place that stifled creativity and joy, leading to despair and alienation. Through "London," he wanted to remind people of their inherent humanity and the need for compassion and understanding.
* The Power of Art: Blake believed in the transformative power of art. He saw poetry as a means of awakening consciousness and inspiring social change. He hoped that "London" would awaken readers to the realities of their world and inspire them to act for a better future.
In short, "London" is a powerful indictment of the social and moral ills of 18th-century London, and a call for compassion, justice, and a more equitable society.