Why does Danforth demand that proctor sign the statement?

Danforth insists that John sign a written confession that will be posted on the church door. He claims that he must have concrete evidence of John's confession to be used for the instruction others convicted of witchcraft so that they would see his confession and perhaps follow with their own.

the correct order is:

you're your own worst enemy:

they're going to say what they say, but

their opinions aren't holding you

back. it's your self-defeatist

attitude that's keeping your work

from getting its due.