We're Being ALLITERATE

PERFECTLY PLACED 'P's

Galileo:  Practicing produces perfection, permanence, patience, preciousness, and power. 

Wilberforce:   Pillaging pirates eat pickled peppers on the porticus (porch) for prandium (lunch). [including a bit of latin],
 Panem et Circenes prevents personal prosperity.

Austen:  Pan prized his pink pipe.

Washington:  Peter Pan pecked a pair of purple pairs.

Hypatia:  A Princess purchased pink pants.

Joan of Arc:  The pretty pink dress on 'dat'