I've decided to discontinue my long talks. It's because of my throat. Someone threatened to cut it.
The mind is a wonderful thing. It starts working the minute you're born and never stops working until you get up to speak in public.
A talk is like a woman's dress. Long enough to cover the subject, but short enough to be interesting.
If you don't want to read it, see it or hear it, don't say it.
Never try to impress people with the profundity of your thought by the obscurity of your language. Whatever has been thoroughly thought through can be stated simply.