The Tattvartha Sutra is a foundational text of Jain philosophy, written by Umaswati in the 2nd century CE. It serves as a comprehensive summary of Jain beliefs, practices, and the path to liberation, effectively bridging the teachings of the two main sects of Jainism: Digambara and Svetambara. This text is essential for understanding the core tenets of Jainism, including the nature of reality, the soul, karma, and the concept of moksha.