"If you're not comfortable with public speaking - and nobody starts out comfortable; you have to learn how to be comfortable - practice. I cannot overstate the importance of practicing. Get some close friends or family members to help evaluate you, or somebody at work that you trust."

"A thousand years ago, everybody knew the Earth was the center of the universe. Five hundred years ago, they knew the Earth was flat. Fifteen minutes ago, you knew we humans were alone on it. Imagine what you'll know tomorrow."

"I have never met a man so ignorant that I couldn't learn something from him."

"A little knowledge is a dangerous thing. Drink deep, or taste not the Pierian spring."

"A sarcastic person is a person who is not only witty but also wise."

"Sarcasm is the lowest form of wit but the highest form of intelligence."