In "Einstein: His Life and Universe," Walter Isaacson explores the concept of global citizenship, highlighting that individuals should perceive themselves as part of a larger community beyond national borders. This perspective encourages people to embrace a sense of belonging to humanity as a whole, promoting understanding and cooperation across diverse cultures. By fostering this mindset, individuals can contribute to a more interconnected and harmonious world.

Isaacson emphasizes that Einstein himself embodied this philosophy, advocating for peace and social justice. The idea of being a citizen of the world inspires individuals to engage with global issues and work together to solve them, using shared knowledge and compassion. In doing so, people can transcend local conflicts and focus on the collective challenges facing humanity.