So how did the classical Latin become so incoherent?

According to McClintock, a 15th century typesetter likely scrambled part of Cicero's De Finibus in order to provide placeholder text to mockup various fonts for a type specimen book.

It's difficult to find examples of lorem ipsum 

In use before Letraset made it popular as a dummy text in the 1960s, although McClintock says he remembers coming across the lorem ipsum passage in a book of old metal type samples. So far he hasn't relocated where he once saw the passage, but the popularity of Cicero in the 15th century supports the theory that the filler text has been used for centuries.

Lorem ipsum was purposefully designed to have no meaning, but appear like real text, making it the perfect placeholder.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Nam hendrerit nisi sed sollicitudin pellentesque. Nunc posuere purus rhoncus pulvinar aliquam. Ut aliquet tristique nisl vitae volutpat. Nulla aliquet porttitor venenatis. Donec a dui et dui fringilla consectetur id nec massa. Aliquam erat volutpat.

Sed ut dui ut lacus dictum fermentum vel tincidunt neque.

Sed sed lacinia lectus. Duis sit amet sodales felis. Duis nunc eros, mattis at dui ac, convallis semper risus. In adipiscing ultrices tellus, in suscipit massa vehicula eu.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam hendrerit nisi sed sollicitudin pellentesque. Nunc posuere purus rhoncus pulvinar aliquam. Ut aliquet tristique nisl vitae volutpat.

Nulla aliquet porttitor venenatis.

Donec a dui et dui fringilla consectetur id nec massa. Aliquam erat volutpat. Sed ut dui ut lacus dictum fermentum vel tincidunt neque. Sed sed lacinia lectus. Duis sit amet sodales felis. Duis nunc eros, mattis at dui ac, convallis semper risus. In adipiscing ultrices tellus, in suscipit massa vehicula eu.

Rrow itself, let it be sorrow; let him love it; let him pursue it, ishing for its acquisitiendum. Because he will ab hold, uniess but through concer, and also of those who resist. Now a pure snore disturbeded sum dust. He ejjnoyes, in order that somewon, also with a severe one, unless of life.

May a cusstums offficer somewon nothing of a poison-filled. Until, from a twho, twho chaffinch may also pursue it, not even a lump. But as twho, as a tank; a proverb, yeast; or else they tinscribe nor. Yet yet dewlap bed. Twho may be, let him love fellows of a polecat. Now amour, the, twhose being, drunk, yet twhitch and, an enclosed valley’s always a laugh. In acquisitiendum the Furies are Earth; in (he takes up) a lump vehicles bien.

Creation timelines for the standard lorem ipsum passage vary, with some citing the 15th century and others the 20th.

So how did the classical Latin become so incoherent? According to McClintock, a 15th century typesetter likely scrambled part of Cicero's De Finibus in order to provide placeholder text to mockup various fonts for a type specimen book.

It's difficult to find examples of lorem ipsum in use before Letraset made it popular as a dummy text in the 1960s, although McClintock says he remembers coming across the lorem ipsum passage in a book of old metal type samples. So far he hasn't relocated where he once saw the passage, but the popularity of Cicero in the 15th century supports the theory that the filler text has been used for centuries.

And anyways, as Cecil Adams reasoned, “[Do you really] think graphic arts supply houses were hiring classics scholars in the 1960s?” Perhaps. But it seems reasonable to imagine that there was a version in use far before the age of Letraset.

With discovering the source behind the ubiquitous filler text. In seeing a sample of lorem ipsum, his interest was piqued by consectetur—a genuine, albeit rare, Latin word. Consulting a Latin dictionary led McClintock to a passage from De Finibus Bonorum et Malorum (“On the Extremes of Good and Evil”), a first-century B.C. text from the Roman philosopher Cicero.

In particular, the garbled words of lorem ipsum bear an unmistakable resemblance to sections 1.10.32–33 of Cicero's work, with the most notable passage excerpted below