"Jill, Jill my darling!  Too much Martian has rubbed off on YOU.  Of course it wasn't funny - it was tragic.  That's why I had to laugh.  I looked at a cageful of monkeys and suddenly I saw all the mean and cruel and utterly unexplainable things I've seen and heard and read about in the time I've been with my own people and suddenly it hurt so much I found myself laughing."