A baby's existence for the first three months is a one-way street. One person is doing all the work and the other is crying, sleeping and pooping. So the first moment when you're actually able to do something and they acknowledge your presence, that's a big deal. A very big deal.
Books are the legacies that a great genius leaves to mankind, which are delivered down from generation to generation as presents to the posterity of those who are yet unborn.