We thanked him as we were leaving, and I said as a parting shot:- "There can't be many other prisons that have had a famous poem written about them".
"Eh?" he replied.
I know not whether Laws be right,
Or whether Laws be wrong;
All that we know who lie in gaol
Is that the wall is strong;
And that each day is like a year,
A year whose days are long.
The full text is here.