Given the seeming opposite message of each adage, which one holds true? “If you’re explaining, you’re losing”, often quoted by Ronald Reagan, and “Explanation is eloquence” which Bill Clinton is fond of.

“The Great Communicator” and “Slick Willy” were famously charismatic so I would hesitate to label either a greater authority on charisma. Both had political success and skill so it’s not like either had less of a grasp on campaigning?