Ali had this posted on her blog, but it was such a good quote I wanted a copy for myself and this was a good place to archive it. The quote is by Anna Quindlen.
...but the biggest mistake I made is the one that most of us make while doing this. I did not live in the moment enough. This is particularly clear now that the moment is gone, captured only in photographs. There is one picture of the three on them sitting in the grass on a quilt in the shadow of the swing set on a summer day, ages 6, 4, and 1. And I wish I could remember what we ate, and what we talked about, and how they sounded, and how they looked when they slept that night. I wish I had not been in a hurry to get on to the next things: dinner, bath, book, bed. I wish I had treasured the doing a little more and the getting it done a little less.