In this talk Andrew gives his interpretation of the traditional “four seals” as discussed in the classic book by Uchiyama on Soto Zen: Opening the Hand of Thought. The four seals are:
1. Life is suffering.
2. Impermanence.
3. No substantial self (interdependence).
4. Nirvana (the end of suffering).
The four seals are the essentials for a teaching to be Buddhism. They are what differentiates Buddhism from other religions.