Reading 5x5

The case is pure simplicity:

You only need to use your eyes

And answer truly what you see

Without the cataracts of lies.

Or if you choose to shut them tight

You need but listen with your ears

For sound can substitute for sight

And what is heard for what appears.

Or if you will not listen, too,

Then you need but inhale, for that

Will serve to sniff out what is true

Assuming you can smell a rat.

Indeed, if you have any sense

You can determine this offense.