An ode.it reads:
The lock is for certain a curious toy
It has somewhere a hidden key
Though the wit and will to cloy
Does it keep safe what men can see?
A hidden thing is not secure
They have told us roundly, smartly so
To protect aright you must abjure
Observe, repel and touch & go;
But one more curiosity creeps
Of what we have and are and know
Tumblers; obscure, these things it keeps
But for a time & all else will show.