Abstract
The ornate style practiced before the scientific revolution of the seventeenth century too often led to obscurity and verbal games rather than clarity and the pursuit of truth. In reacting against ornateness, however, scientists developed the ideal of a plain style that is itself problematic. The writer's posture is essentially defensive; he is more concerned with what not to do than what to do in his writing. The practice of amplification, useful for audience adaptation, has been abandoned, and rhetorical devices that promote the personal touch are no longer taught. Recent experiments indicate that classroom exercises involving rhetorical devices can help promote economy and clarity, encourage more personal and aggressive writing, strengthen the idea that writing is an art, and arouse writer and reader interest. The study of stylistic devices in use before the scientific revolution can be fruitful for modern scientific and technical writing.