David do you mean Lao Tzu? I think auto-correct changed it to Ray. I haven't heard that quote before. Captures the concept of learning/unlearning in a more elegant manner.

Can you say more about what you will try with your food prayer? Just noticing that the food is there/it is good vs telling yourself to be grateful for it?

I am not sure I know how to answer your question. The first hurdle for me is knowing/identifying wise people. Every person I have known who has offered me wisdom has also been flawed. I don't know whether that disqualifies them from being called wise, and I just haven't found truly wise people yet.

Can you elaborate more on what you mean/tell me if there is a question behind your question?