Brevity Is Best: Nicknamed "Silent Cal," President Calvin Coolidge was once challenged by a reporter, saying, "I bet someone that I could get more than two words out of you." Coolidge responded, "You lose." The notion of crafting six word memoirs really took off after Smith Magazine shared this poignant one written by Ernest Hemingway: "For Sale: baby shoes, never worn." Pithiness Pays Off For Other Reasons: When required to be brief, for example, we gain clarity about what we really mean -- or have to offer. As Mark Twain once wrote, in a slower-paced time, "I didn't have time to write a short letter, so I wrote a long one instead.