What was the most highly regarded virtue by the middle class during the 1800s?

Respectability was the most highly regarded virtue by the middle class during the 1800s.

Explanation:

During the Industrial Revolution, respectability was regarded as the main virtue followed by the working class in the XIX century. Respectability prescribed certain moral and traditional behaviors that were regarded as desirable for people. It demanded people to keep cleanliness, sobriety, chastity, self - responsibility and manly independence. Failing on achieving these goals would result into class stigma.