I've heard this a few times from people who meet Mason for the first time. I never thought much about those words but lately, I see it. I see it in the wrinkles that form on his forehead when he's concentrating on something (like pushing out a poo).
I see it in the way he stares right into my soul when we're lying in bed.
But mostly I see it when I say "I love you" and he grins at me this big boy grin, as if to say "I know."