Not all the harmful prejudices that hold us back from mutual respect and cooperation are based on visually apparent traits like race or sex. The fine gradations of polite society have given most of us an abundance of criteria that we use to judge people based on their...

The turn of the 20th century was the first great era of female emancipation in the United States. For the first time in centuries, public figures encouraged women to wear clothing that facilitated movement, take healthy exercise regularly, and involve themselves in...