An allegory by Rabash in Steps of the Ladder, Vol. 1, Article no. 55,
Once, some people purchased a diamond
And were joyful that they had paid
An extremely low price.
But one of them wondered
If, in fact, the diamond was genuine.
No one in town knew
Anything about diamonds,
So they went to an expert merchant
To find out if
The diamond was real or fake.
They were pleased with his reply
That it was real.
But one man wondered
About trusting the merchant,
Since he might be a crook himself.
So this man decided to learn
The trade himself
And become an expert,
Which he did, successfully.