... a novel.

These memories rehearsed themselves tediously and inexorably in Colmore's mind like the repertoire of a neighbouring amateur musician.

—Roy Fuller, The Father's Comedy, p. 66.

... a fable.

"You shall have an ample share of my dainties."

—Aesop, "The Town Mouse and the Country Mouse," translated by George Fyler Townsend.

... a tragedy.

Andromache: I would be worthy to be Hector's wife;
And had I been a man, as my Soul's one,
I had aspired a nobler name—his friend.

—John Dryden's Troilus and Cressida, II.i.

... a guide to our future.

An economy based on information, with its tendency to zero-cost products and weak property rights, cannot be a capitalist economy.

—Paul Mason, Postcapitalism, p. 175.

... a novel.

"What's it like to spend a night with a woman?"

"Marvelous. It's as though the night was colored, instead of being black—something between pink and blue. In the morning you think you're waking up in a meadow. The day begins with a taste of honey."

—Marcel Aymé, The Transient Hour, translated by Eric Sutton.

... an FAQ.

Make your HTML as simple as possible. HTML is an evolving standard, and one that may be completely obsolete in the long term. Use of advanced features may just mean that your version will be obsolete or unreadable that much faster.

—Project Gutenberg's HTML FAQ. By changing a few terms, one could modify this to excellent writing advice. The English language is evolving; it's dangerous to your prose's longevity to bet on today's slang being around tomorrow.