For example, here's the essence of unschooling, right here, from p.129 (italics are in the original):
The learning child unconsciously assumes two things that are crucial to learning. The first assumption is that there is nothing standing between him and happiness but what he hasn't learned yet. At least for a while, he does not think that having or doing something else would be nicer. As long as he's learning he's happy. He lives to find out. The second assumption is that whatever comes along next is the next thing he needs to learn. He does not doubt the fulfilling nature of life. These two assumptions are crucial to receptivity. And receptivity is crucial to learning.
I think I will tattoo this on my forearm: "Whatever comes along next is the next thing I need to learn."
Just imagine not having lost that assumption! It's time for me to re-assume it.