How many people are there nowadays who are full of praise for the Gospel and yet, who, at the same time, are willing to offer even a penny for the sake of the Good News. In other words, how many people are there who are willing to forsake their greed and wilfulness? There is neither a farmer nor trader who would drop his market price for corn by one penny (even if there were good reason for this reduction). On the contrary, they are much happier when they can raise the price by as much as one pound. Similarly, a citizen has no scruples at selling diluted beer for the real thing. (…). May God preserve the Gospel and our consciences wherever and whenever possible.
Schriften, 36. Band, 432b