What is one of the characteristics of a strong theme?

One characteristic of a strong theme is its universality. A strong theme is relevant and resonant across different cultures, time periods, and contexts. It speaks to something intrinsic to the human experience and can be understood and appreciated by a wide range of audiences. This universality gives the theme a timeless quality, making it enduring and impactful. Additionally, a strong theme can be interpreted in multiple ways, allowing for rich and complex exploration within a story or work of art.