a sort of protest
Since ‘nothing is sacred now but villany’, thoughts from 1738:
‘This was the last poem of the kind printed by our author, with a resolution to publish no more; but to enter thus, in the most plain and solemn manner he could, a sort of PROTEST against that insuperable corruption and depravity of manners, which he had been so happy as to live to see. Could he have hoped to have amended any, he had continued those attacks; but bad men were grown so shameless and so powerful, that Ridicule was become as unsafe as it was ineffectual. The Poem raised him, as he knew it would, some enemies; but he had reason to be satisfied with the approbation of good men, and the testimony of his own conscience.’