From the wise...
“Be sincere; be brief; be seated.” ~ Franklin D. Roosevelt, on speechmaking (1882-1945, 32nd President of the United States)
“Speech is power: speech is to persuade, to convert, to compel. ~ Ralph Waldo Emerson (1803-1882, American philosopher, lecturer, essayist, and poet)
“The right word may be effective, but no word was ever as effective as a rightly timed pause. ~ Mark Twain (1835-1910, American author and humorist)
To the funny...
“It usually takes more than three weeks to prepare a good impromptu speech.” ~ Mark Twain (1835-1910, American author and humorist)
“There are always three speeches, for every one you actually gave. The one you practiced, the one you gave, and the one you wish you gave.” ~ Dale Carnegie (1888-1955, developer of courses in public speaking and interpersonal skills, and author of How to Win Friends and Influence People)