The Iambic Line as the Body's Beat
William Shakespeare
from As You Like It, II.vii
"All the world's a stage, and all the men and women merely players."
I. The Heart's Meter
Iambic pentameter — five soft-loud beats per line — mirrors the resting rhythm of the human heart and the natural pace of English speech. This is why Shakespeare's verse can be spoken without seeming to be verse at all.
II. The Variation that Makes the Rule
The art is not in keeping the meter but in breaking it. A trochee at the start of a line wakes the ear. A spondee in the middle lands a verdict. The line 'Never, never, never, never, never' is five trochees where Lear's grief refuses the comforting iamb entirely.
III. The Practice
Take a paragraph of your own prose and rewrite one sentence as a single iambic line of ten syllables. Note where your natural speech wants to resist. That resistance is where your voice lives.