The Buddha taught that there are two kinds of suffering: that which comes from the outside world, and that which comes from within you. With the latter, only you can do anything about it. Where does that suffering come from? Emptiness. Examining the thoughts and feelings that arise from emptiness is one tenet of Buddhism. Why do we suffer? What is at the root? Where did it begin? When we see the answers to those questions, our suffering, which has arisen from emptiness, returns to emptiness.
- Ittetsu Nemoto, The Counselor