Here is my husband's speech on the Origins of the Ideas of the American Founders.
It's on the website CEI on Demand. Go about 10 minutes in to get to my husband's portion.
One of the interesting things about this speech is his reference to Milton's defense of Freedom of Speech.
Words have meaning and power. Words shape our perceptions of reality. When fear suppresses our abilty to freely argue "according to our conscience" for or against something, we lose our control over our world.
There's also a question/answer section.