"I only like poems that rhyme." Or, more drastically: "If it doesn't rhyme, it's not a poem." These declarations of allegiance to end-rhyme sound traditional or even daringly reactionary—fearlessly ...

Rhyme thrives at both poles of literature. It is the material of a greeting card—“Roses are red / Violets are blue / Sugar is sweet / And so are you”—and the high-tragic language of Racine. Rhyme ...

Photo illustration by Juliana Jiménez Jaramillo. Bieber photo by Frazer Harrison/Getty Images. Beatles photo by Peter Skingley/AFP/Getty Images. What do Justin Bieber and the Beatles have in common?