Moods are not to be confused with emotions. Moods will dispose you to having an emotion. Certain moods you're more likely to get angry than others, as we all know, but emotion is not the same as mood. Emotions, I think, always have to do with agitated forms of desire. Whenever you're in an emotional state, you have some sort of agitated desire. So, emotions are fairly special -- I am not always in some sort of emotional state or other, but I think I am always in some mood or other.

- John Rogers Searle