"Day, n. A period of twenty-four hours, mostly misspent"

This quote by Ambrose Bierce is a humorous way of expressing the idea that most people do not make the most of their days. He implies that the majority of people waste their days, rather than using them to their fullest potential. This could be due to a lack of motivation, or simply because people are too busy with their day-to-day lives to take the time to do something meaningful. Bierce's quote is a reminder to make the most of our days, and to use them to pursue our passions and goals. It is a reminder to take advantage of the time we have, and to make sure that we are not wasting it.