In this era of parenting classes, books, "stewing", competing, and whatever else has gone on with parents over the last few decades (and it's not to suggest that I don't think people should REALLY make it a point to gain a solid and sound understanding not just of child development, but of human nature and growth); but the one thing that I think of (well, there's two, but this one is, I think, the most memorable and more important).
That is something she said once I was of an age when thinking/talking about being a mother was going on. She'd talk about how "the young mothers these days" do all kinds of reading on how to parent; ;and while, on the one hand, she, herself, had a couple of child health/child care books on hand, but on the other didn't think much of Benjamin Spock (for a number of reasons), she'd say, "When I had my babies I just knew I wanted them and was ready to have them, and I just took them home, loved them, took good care of them, and told them right from wrong when the time came." Then she'd add, "...and that was it."
It was a different time (fifties in my case) (baby seats hooked over the back of a front, bench, seat in the car; baby formula made by hand with evaporated milk, Karo syrup, and sterilizing equipment). Also, there were some relatively minor things that I think she could have understood better (but I don't see a whole lot of today's parents seeming to understand some of those things very well either.
For the most part, though, the points she made when she'd say what I mentioned above (and I think the fact that my two siblings and I are spaced four-and-half and five years apart, so there was no real vying for attention among preschoolers/babies) kind of really ARE "It".
Nobody asked, but that second thing that sticks is my mind is she'd so often say, "You have a good, clear, head. Don't do do anything to muck it up" (this was as the 1960's kicked in, needless to say maybe). I'm fairly certain her approach from "Day 1" (again, within the context of time it was, rather than today) was enough to make me value my "good, clear, head" and vow not to "muck it up" (if I could help it) with one kind of cr*p or another (and all "cr*p" is not necessarily drugs or other substances).