The Climactic No is a poetic riddle concerning immortality, originating in The Mores of Exhorting. The rules of the form are applied by poets to produce individual poems which can be recited. The poem is a single couplet. Use of consonance is characteristic of the form. Every line of the poem has a medial caesura. The ending of each line of the poem shares the same rhyme, though the rhyming doesn't have to be perfect. The second line of the couplet is required to maintain the phrasing of the first line. The second line of the couplet reverses the word order of the first line. The second line of the couplet presents a different view of the subject of the first line. The first line is intended to make a concession. It has five syllables. The second line is intended to make an assertion. It has sixteen syllables.