“The volume of your voice does not increase the validity of your argument.”

“As the popularity of science-fiction increases, so inevitably does the volume of clownish imprecation against it.”

“You raise your voice when you should reinforce your argument.”

“If you aren’t hearing your inner voice, it could mean you’re overburdened or not stimulated enough, or that you’ve learned to shut it off because the people around you have refused to engage it. Perhaps you’ve had a hardening of the arteries around your soul. I believe the choices we make in our lives and the people and places surrounding us increase the volume of our inner voice, decrease it, or annihilate it entirely.”

“My father always used to say, "Don't raise your voice. Improve your argument." Good sense does not always lie with the loudest shouters, nor can we say that a large, unruly crowd is always the best arbiter of what is right.”

“Don't raise your voice, improve your argument."[Address at the Nelson Mandela Foundation in Houghton, Johannesburg, South Africa, 23 November 2004]”