Yes--and you learn them as a parent when you realize the need to tell your kid something that's automatic to you such as "don't run into the street without looking", "eat your vegetables", and "wash your hands after you go to the bathroom."
My mom actually taught me "Never wash your hands after peeing in a public restroom, because the faucet handles are dirtier than your body."
And she's a doctor.
I was just wondering. Human minds are messed up in 1001 ways, but are there a few rational principles that most people already have down? Of course, the answers to this question are probably so extremely obvious that I haven't even considered them. But I ask all the same.