What Is the Importance of the Non Dual Understanding?

Rupert: I had been very interested in these em matters, the non dual understanding, for a long time. And my my interest am, what was initially an interest, became a passion in my early twenties. He says that after his first romantic relationship came to an end he wondered if anything can be reliably invested with happiness. That's when he met francis luc who helped him find peace and self-reliance.