Passion and desire go hand in hand, especially as a motivation. Linstead & Brewis refer to Merriam-Webster to say that passion is an "intense, driving, or overmastering feeling or conviction". This suggests that passion is a very intense emotion, but can be positive or negative. Negatively, it may be unpleasant at times. It could involve pain and has obsessive forms that can destroy the self and even others. In an occupation, when an individual is very passionate about their job, they may be so wrapped up in work that they cause pain to their loved ones by focusing more on their job than on their friendships and relationships. This is a constant battle of balance that is difficult to achieve and only an individual can decide where that line lies. Passion is connected to the concept of desire. In fact, they are inseparable, according to a (mostly western) way of thinking related to Plato, Aristotle, and Augustine. These two concepts cause individuals to reach out for something, or even someone. They both can either be creative or destructive and this dark side can very well be dangerous to the self or to others.