Blockquote

A short quotation stays in the sentence, inside quotation marks, and the reader never breaks stride. Past a certain length that stops working: the marks are too far apart to hold the borrowed words together, the sentence hosting them collapses under its own subordinate clauses, and the reader loses track of who is speaking. The blockquote is the fix. The passage leaves the paragraph, becomes a block of its own with space above and below and usually an indent, and the change in shape does the job the quotation marks were failing at. The switch is a judgment about length and weight, and the usual rule of thumb in editorial style guides is around forty words, or four printed lines.

Because the block already says “these are someone else’s words”, the quotation marks come off. Setting a blockquote in marks as well is belt and braces, and it makes the hanging punctuation problem worse: an opening mark at the start of an indented block either sits inside the indent and reads as a ragged left edge, or hangs outside it and needs negative space nobody budgeted for. Where marks do stay, in the inline case, they should be the real typographic ones rather than the typewriter substitutes.

The attribution belongs to the block, not to the paragraph after it. In HTML that is <figure> wrapping a <blockquote> and a <figcaption>, or a <footer> inside the blockquote, and the cite attribute for the source URL, which is metadata and is not rendered. The quotation itself is <blockquote>, and the element is real markup rather than a styling hook: assistive technology announces it as a quotation, so a div with an indent leaves a screen reader user unable to tell where the borrowed words start and stop.

The word that gets confused with it is pull quote, and they are almost opposites. A pull quote repeats a sentence that is already in the article, pulled out and set large to bait a scanning reader. A blockquote brings text in from somewhere else, and it is load-bearing: delete it and the argument loses its evidence. Delete a pull quote and the article is unchanged. The tell is the attribution: a blockquote names a source outside the piece, and a pull quote never needs to, because the source is the paragraph three inches above it.