Question

"… [w]e see it now in its true light, and regard it as the most safe and stable basis for free institutions in the world."

Answer 1

I believe the answer is: Many in the South once believed that slavery was a moral and political evil. That folly and delusion are gone

The quote above was said by John C. Calhoun. He held the position as the vice president under John Quincy Adams and Andrew JAckson. He was known as one of the biggest figure who supported slavery in united states and often got in conflict with the abolitionists.