The "Treatise of Zera Yacob" is a philosophical work from the 17th century, written by an Ethiopian philosopher during a period of self-imposed exile. The treatise presents a profound discourse on the nature of God, the pursuit of knowledge, and the application of reason and natural law in determining ethical truths. The author critiques various religious beliefs and practices, advocating for a rational approach to understanding the universe and the divine. His arguments emphasize the importance of personal inquiry and the critical examination of tradition and authority, making it a pioneering work in the field of philosophical rationalism within an African context.