This was a forest, and there were any number of sane explanations how he got here.

There had to be some sane explanation.

The longer he pursued a sane explanation, the faster sanity ran through his fingers like the dirty water under his feet.

If there was a sane explanation for all this, that plume would attract Air Force rescue.

There's a perfectly sane explanation for what just happened.

That was the only logical, sane, reasonable explanation.

"There has to be some sane explanation."

But there was no saner explanation.

It's the only sane explanation I can think of.

Marty turned away, revolted, his reason thrashing around to find some sane explanation, but there was none to be had.