He's the plain, unvarnished, dyed-in-the-wool, original man.

There's a word fits him, if I could think of it." He looked at her inquiringly.
"Primitive, I think you mean," she said.
"That's it--primitive.

That's him.

He's the rough material; nobody's ever helped him to get into shape.

A lot of folks pride themselves on what they call culture, forgettin' that it wasn't in them when they came into the world, that it growed on them after they got here, was put there by trainin' an' example.