Why did the Puritans object to any other religions being practiced?

I believe the text you are looking for is the quote below;

For these reasons, among others, they carried about an air of innate resistance, even of persecution. Their fathers had, of course, been persecuted in England. So now they and their church found it necessary to deny any other sect its freedom, lest their New Jerusalem be defiled and corrupted by wrong ways and deceitful ideas.