1: What is Buddhism?
What is Buddha? Each of us is a Buddha.
What is Buddhism? It teaches us the path to becoming a Buddha.
2: What is Zen Buddhism?
The path to becoming a Buddha in cultivation is Zen.
3: What is the method of enlightenment of the Sixth Patriarch?
The one who points directly to the mind and realizes the nature of the mind and becomes a Buddha is the method of enlightenment of the Sixth Patriarch.
