'...with no one knowing about it...'
'...without anyone knowing about it...'
PS The text was written 120-odd years ago. I think when people use 'X the wiser ' today X is usually either none or any. This search shows that, in BNC, out of the 62 cases of 'X the wiser' more than half were one of those two.
If you don't want to sound rather dated, I'd stick to 'any' and 'none'.
Interested in Language