The brain is like a coal mine

Diamonds come from coal

When pressure, heat, and time combine-

Though all of this is merely told.

Who sees the process?

Can it be mapped out?

Or must some things stay unknown?

How do lumps of hardened dust

Become such priceless, precious stones?

The brain is like a closed mine

Though coal as fuel can burn and live,

Diamonds weigh down fingertips.

So what’s the use in value?