WHEN MAKING BUISNESS PRESENTATIONS IT IS BEST TO GET TO THE POINT AS QUICKLY AS POSSIBLE SO AS TO MINIMIZE THE CHANCE OF LOSING YOUR AUDIENCE, THE RESULT OF HAVING SAID TOO MUCH WHEN MUCH LESS WOULD HAVE SUFFICED

"Less is more."

From an 1855 poem "The Faultless Painter" by Robert Browning

In addition to being poetic it neatly summarizes what could be the best business advice ever.