# The Diamond Sutra
Teaches the practice of non-abiding and the illusory nature of all phenomena.
- **Sunyata**: Emptiness.
- **Non-Attachment**: The mind should not dwell on any thought.
A technical look at one of the most influential Mahayana sutras concerning 'emptiness'.
Researcher Note:
Considered the world's oldest dated printed book.
Considered the world's oldest dated printed book.