Desire is a sense of longing for a person or object or hoping for an outcome. Desire is the fire that sets action aflame. The same sense is expressed by emotions such as "craving" or "hankering". When a person desires something or someone, their sense of longing is excited by the enjoyment or the thought of the item or person, and they want to take actions to obtain their goal. The motivational aspect of desire has long been noted by philosophers; Hobbes (1588–1679) asserted that human desire is the fundamental motivation of all human action.

In Buddhism, for an individual to effect his or her liberation, the flow of sense-desire must be cut completely; however, while training, he or she must work with motivational processes based on skilfully applied desire. The Buddha stated, according to the early Buddhist scriptures, that monks should "generate desire" for the sake of fostering skillful qualities and abandoning unskillful ones.

While desires are often classified as emotions by laypersons, psychologists often describe desires as different from emotions; psychologists tend to argue that desires arise from bodily structures, such as the stomach's need for food, whereas emotions arise from a person's mental state. Marketing and advertising companies have used psychological research on how desire is stimulated to find more effective ways to induce consumers to buy a given product or service. While some advertising attempts to give buyers a sense of lack or wanting, other types of advertising create desire associating the product with desirable attributes, either by showing a celebrity or model with the product.

Longing may refer to:

"For My Lover" is the ninth track of Tracy Chapman's self-titled album Tracy Chapman.

In 1986 Tracy recorded "For My Lover" for Fast Folk Musical Magazine, a Greenwich Village folk magazine sold with a record.

Some people view the song as being about an unhealthy relationship but when viewed with the knowledge of her sexual orientation and its legality at the time, it takes on a different possible context.