Cleanliness is next to the divine. Unfortunately for some of us who identify as atheists godliness plays no part in our lives. So, with the divinity out of the equation, how do we define clean.
Unsullied, devoid of dirt, and crisp, fresh and virtuous. Virtue is a concept that is not negatively informed by disbelief in diety.
Shake hands and come out of your corners, folks. But let’s keep it clean.