We all know eloquence when we hear it. The skillful delivery of language delights us, captivates us, persuades and moves us. Most importantly, says the linguist David Crystal, speakers and listeners alike enjoy eloquent speech. Crystal has dissected the qualities and practice of eloquence. Partly, he wants to better understand how it's achieved. He also wants to show that eloquence is a talent everyone who uses words can possess. Crystal joins us to examine how the gift of gab works.