1. Tradition vs. Modernity: The play is set in the Philippines in the 1950s, a time when the country was undergoing a period of rapid modernization and cultural change. The clash between traditional Filipino values and the influence of the West is a central theme throughout the play.
2. Role of Women: Joaquin's play is notable for its strong female characters. The main protagonist, Teresa, is determined to break free from the confines of traditional society and find personal fulfilment. This theme of women's empowerment is explored through the characters of Teressa's mother and sister as well.
3. Spiritual Meaning: The title "The Summer Solstice" suggests a sense of spiritual significance and the play delves into the characters' quests for personal enlightenment. The setting, a summer vacation in a rural area, allows the characters to reflect on their lives and search for inner peace.
Overall, "The Summer Solstice" is a thought-provoking play that explores social, gender, and spiritual themes against a backdrop of historical change in the Philippines.