Can you provide a synopsis of the poem 'The Four Zoas' written by William Blake?
"The Four Zoas" is an epic poem by the English poet and artist William Blake, which he worked on intermittently throughout his life but left unfinished at his death. The poem is part of Blake's larger prophetic works, which explore his mystical and visionary beliefs about the nature of the universe and the human soul.

The central theme of "The Four Zoas" is the fall of man and his redemption through spiritual transformation. The "zoas" in the title refer to four archetypal beings that represent different aspects of the human soul: Urizen, the embodiment of reason and law; Luvah, the embodiment of passion and emotion; Tharmas, the embodiment of physical sensation; and Urthona, the embodiment of creativity and imagination.

The poem begins with the creation of the universe and the separation of the four zoas, who become trapped in a state of division and conflict. The narrative then shifts to the story of a human couple, Los and Enitharmon, who represent the male and female aspects of the soul. Los and Enitharmon's relationship is strained by the forces of evil and division, which threaten to tear them apart.

Throughout the poem, the zoas and other symbolic figures engage in a series of battles and transformations, representing the struggle between opposing forces within the human psyche. Ultimately, the poem suggests that spiritual redemption can only be achieved through a process of integration and reconciliation, in which the zoas are reunited and transformed.

Although "The Four Zoas" is a complex and often cryptic work, it is considered one of Blake's most ambitious and visionary works, and an important example of Romantic-era poetry.