Which phrases in this excerpt from Alexander Pope’s "An Essay on Criticism" are oxymorons?

Such "shameless Bards" we have; and yet 'tis true,
There are as mad, "abandon'd Criticks" too.
The "Bookful Blockhead", ignorantly read,
With Loads of Learned Lumber in his Head,
With his own Tongue "still edifies" his Ears,
And always List'ning to Himself appears.
All Books he reads, and all he reads assails,
From "Dryden's Fables" down to Durfey's Tales.
With him, most "Authors steal" their Works, or buy;
Answers r in quotes

Question

Which phrases in this excerpt from Alexander Pope’s "An Essay on Criticism" are oxymorons?

Such "shameless Bards" we have; and yet 'tis true,
There are as mad, "abandon'd Criticks" too.
The "Bookful Blockhead", ignorantly read,
With Loads of Learned Lumber in his Head,
With his own Tongue "still edifies" his Ears,
And always List'ning to Himself appears.
All Books he reads, and all he reads assails,
From "Dryden's Fables" down to Durfey's Tales.
With him, most "Authors steal" their Works, or buy;
Answers r in quotes

anonymous · Answer

somebody please help me.