It's not what we don't know that hurts. It's what we know that ain't so.

It isn't what we don't know that gives us trouble. It's what we know that ain't so.

We fear what we don’t know.

It is not what we know, but what we can prove.

In this world, who can do a thing, will not;
And who would do it, cannot, I perceive:
Yet the will's somewhat — somewhat, too, the power — And thus we half-men struggle.

It isn't what we don't know that gives us trouble, it's what we know that ain't so. - Will Rogers The

Reports that say that something hasn't happened are always interesting to me, because as we know, there are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns — the ones we don't know we don't know. And if one looks throughout the history of our country and other free countries, it is the latter category that tend to be the difficult ones.

We might not be fully sure of all that we are. & yet we have endured all that we were.

It seemed to me that we knew something about how issues were decided, but that we knew much less about how they got to be issues in the first place.

God is working, though we often don’t know just how.

[Truman Show] We think that we see/ but we can't see the half/ we think we learn/ but we can't do the math.

Since we cannot know all that there is to be known about anything, we ought to know a little about everything.

What gets us into trouble is not what we don't know. It's what we know for sure that just ain't so.

Since we cannot know all there is to be known about anything, we ought to know a little about everything.