I have made a solemn vow never to send my drawings because...

I have made a solemn vow never to send my drawings because people have cheated me. In particular, just today I found... that, having done a drawing of souls in Purgatory for the Bishop of St. Gata, he, in order to spend less, commissioned another painter to do the painting using my work. If I were a man, I can't imagine it would have turned out this way.