Here is a list of some of the major themes found in the Epic of Gilgamesh:

1. Friendship and companionship: The relationship between Gilgamesh and Enkidu is a major theme in the epic, showing the power of true friendship and how it can change a person’s life.
2. Mortality and immortality: Gilgamesh’s quest for immortality is a recurring theme throughout the epic, as he struggles to come to terms with his own mortality and seek a way to live forever.
3. Power and leadership: Gilgamesh is a powerful king, but his tyranny and arrogance are also depicted in the epic. The theme of power and leadership is explored through his experiences and decisions as a ruler.
4. Love and sexuality: The epic also touches upon themes of love and sexuality, including the seduction of Gilgamesh by Ishtar and his failed attempt to obtain the love of the goddess.
5. Nature and civilization: The contrast between the natural world and human civilization is explored through the characters of Gilgamesh and Enkidu, as well as through the epic’s depiction of the gods and their relationship to humanity.
6. Fate and destiny: The idea of fate and destiny is a recurring theme in the epic, as Gilgamesh and Enkidu struggle with their own destinies and the role of the gods in shaping their lives.
7. Wisdom and knowledge: The search for wisdom and knowledge is a major theme in the epic, as Gilgamesh seeks the advice of the wise Utnapishtim and the goddess Siduri in his quest for immortality.
8. Death and the afterlife: The epic also touches upon themes of death and the afterlife, as Gilgamesh grapples with the inevitability of his own mortality and seeks answers about what happens after we die.
9. Heroism and bravery: Gilgamesh is depicted as a heroic figure in the epic, and the theme of heroism and bravery is explored through his battles and quests throughout the story.
10. Hubris and humility: The theme of hubris and humility is also present in the epic, as Gilgamesh’s arrogance and pride are ultimately brought low by his own experiences and the wisdom of others.