"I circled around summer noons and October midnights, sensing that there somewhere in the bright and dark seasons must be something that was really me." - Ray Bradbury
In the early 1900s, psychoanalytic theorists speculated that people became bored out of unfulfilled unconscious desire. Midcentury existentialists such as Jean-Paul Sartre, by contrast, saw boredom as a fundamental philosophical crisis, what Schopenhauer once termed "the feeling of the emptiness of life."