12/06/2012 12:14 pm ET Updated Dec 06, 2017

WATCH: Top Conservative Says Anti-Tax Pledge 'Not Conservative, Not Rational, Not Adult'

In a preview of this weekend's Moyers & Company, former Republican congressman Mickey Edwards, a founding father of modern conservative politics, talks about Grover Norquist's beguiling ability to hold elected officials to absolute anti-tax positions.

"It's not conservatism, not rational, not adult," Edwards tells Bill. "It's a 12-year-old kind of thinking."

Watch the clip below, and the full conversation with Moyers this weekend.

Edwards chaired the Republican Policy Committee, was a founding trustee of the conservative Heritage Foundation, and served as the national chairman of the American Conservative Union.

Moyers & Company airs weekly on public television. Explore more at