@victorgijsbers If it is helped "Wonder en is gheen wonder" is the name of a dutch magazine for skeptics..
@victorgijsbers That is probably the case. Have you deciphered the rest? I've got a good idea what it all means but looks like you probably got the answer somewhere already.
@freemo Well, they took that title from Simon Stevin, a famous Dutch scientist from the Scientific Revolution, whose motto this was. I suspect the plate is quoting Stevin, not a magazine for sceptics. ;-)