One day I was playing with a young grandchild when I said, “You know what?”
“Yes,” she said.
I was not expecting this answer, because my question was rhetorical, meant only to get her attention, followed by what I wanted to say in the first place.
“What do you know?” I asked.
“That you love me.”
“You know a lot.”
“I know everything.”
And so we are taught by a child. If we know we are loved, we know everything that matters.