story about a child

I have never met this child. In fact, I barely know the woman who shared the story with me.
It was fairly late and dark, and we were driving back from a shoot I did last month when the client was telling me about her family. She has a little boy at home who I seem to remember is three years old.. This little boy was asked the simple question - 'how old are you?', to which he had a naive, most beautiful, yet wise response for his mere three years of knowledge and wisdom.
'I am not old, I am young.'