a beautiful day for a baby

I never thought that I could love someone so much who can't even talk or relate to me at all.  My heart, though, has warmed to a little girl by the name of Mary Grace.  The joy that I find in her smiles, giggles, wet kisses, and cuddly form is immense.  What is it that makes our hearts love such little things so much?  I can't even imagine what it would be like to have one of my own...