Common themes explored in literature include love, friendship, betrayal, coming of age, loss, power, and identity. These themes resonate with readers across different cultures and generations because they are universal experiences that everyone can relate to on some level. Readers often find comfort, insight, and empathy in seeing these themes explored in different contexts and settings, allowing them to connect with characters and stories regardless of their background. Additionally, exploring these themes in literature can help readers gain a deeper understanding of themselves and the world around them, fostering empathy and cross-cultural understanding.