When a person is following their goals and climbing the ladder of success, there are times that the journey can become extremely frustrating and monotonous. It is at times like this when success quotes can be beneficial. They are great for providing an extra level of inspiration and motivation when it is needed. Another advantage that many people receive by reading a quote promoting successful achievements is it helps them to obtain insight into factors they may not ordinarily have thought about. The result of this is they are generally able to then put things back into their proper perspective.
Reference.com Definition of Success
Success on Wikipedia.org