Quote by Samuel Johnson
Shakspeare never has six lines together without a fault. Perhaps you may find seven: but this does not refute my general assertion.
Summary
This quote is suggesting that in all of Shakespeare's writing, it is rare to find six consecutive lines without some kind of flaw or error. The speaker allows for the possibility of finding seven good lines, but argues that this exception does not undermine the overall claim. The quote highlights the idea that even great writers like Shakespeare are not immune to imperfections or mistakes in their work.