Molière and Racine, perhaps the greatest writers of classical alexandrines in comedy and tragedy respectively.
The French alexandrine (French: alexandrin) is a syllabic poetic metre of (nominally and typically) 12 syllables with a medial caesura dividing the line into two hemistichs (half-lines) of six syllables each. It was the dominant long line of French poetry from the 17th through the 19th century, and influenced many other European literatures which developed alexandrines of their own.