"Let's consider: at the time of the Buddha, when he attained enlightenment, according to the old texts, in the first watch of the night, he went through all of his past lifetimes. Then in the second watch of the night, his mind opened still further and encompassed the coming into being and dying and re-coming into being of all beings, everywhere. The third watch of the night, he realized interdependent origination. He realized interdependent origination because he saw it. It wasn't some theory he thought up. He saw it. That was his enlightenment experience. That was why he was a Buddha."