Quote by Joseph Addison, "The Spectator,
Mirth is like a flash of lightning, that breaks through a gloom of clouds, and glitters for a moment; cheerfulness keeps up a kind of daylight in the mind, and fills it with a steady and perpetual serenity.
Summary
This quote compares mirth, which is temporary and fleeting like a flash of lightning, to cheerfulness, which is constant and serene like daylight. Mirth provides a momentary burst of happiness that momentarily breaks through sadness or gloom. In contrast, cheerfulness is a persistent state of mind that maintains a steady and peaceful serenity. It implies that while mirth can bring temporary joy, cheerfulness is a more lasting and consistent source of contentment in life.