I watched you leap and laugh with these children you barely knew, and the wall rose in me and I felt I should grab you by the arm, pull you back and say, 'We don't know these folks! Be cool!' I did not do this. I was growing, and if I could not name my anguish precisely I still knew that there was nothing noble in it. But now I understand the gravity of what I was proposing--that a four-year-old child be watchful, prudent, and shrewd, that I curtail your happiness, that you submit to a loss of time. And now when I measure this fear against the boldness that the masters of the galaxy imparted to their own children, I am ashamed.