Leonardo Boff is a Brazilian theologian, philosopher, and writer, born on December 14, 1938. He is known for his work in the field of liberation theology, which emphasizes social justice and the rights of the poor. Boff has authored numerous books and articles, advocating for a more equitable society and critiquing institutional structures that perpetuate inequality. In addition to his theological contributions, Boff is an environmental activist, focusing on the relationship between humanity and nature. He has been involved in discussions about sustainability and ecology, promoting the idea that caring for the Earth is essential for social justice. His work has influenced both religious and secular communities worldwide.