In the meantime, a poem:

Thinking Thoughts

I thought of the thought

That I thought I would think

An unthinkable thought

But I thought it, I think.

I thought of the thought,

But did the thought think

That I ought to have thought it?

I ought to, I think.

No, I think the thought thought

That I could NOT think

An unthinkable thought,

But I thought it, I think.