Authors:

Shut the door not that it lets in the cold but that it lets out the coziness.

Mark Twain (2014). “Mark Twain on Common Sense: Timeless Advice and Words of Wisdom from America's Most-Revered Humorist”, p.53, Skyhorse Publishing, Inc.
Shut the door not that it lets in the cold but that it lets out the coziness.