There are those who don't know, and they don't know that they don't know.
They are innocent as children, and it is for us to nurture them, to encourage them!
Then there are those who don't know and who know that they don't know.
They are witting; teach them!
Then there are those who don't know and think that they know.
They are dangerous; avoid them!
Then there are those who know but don't know that they know.
They are asleep; awake them!
Then there are those who know and who know that they know.
Do not follow them because if they know that they know, they would not have you follow them. But listen very carefully to what they have to tell you because they might say something that reminds you of what you already know!