Who is a Bhakta?

Who is a Bhakta? The answer to the question, who is a Bhakta, seems to be very simple. He who has devotion or Bhakti is a devotee or a Bhakta. But then arises the question, what is Bhakti? Bhakti is Love; that Love for God which is generated from the true knowledge of the Greatness (of God); that Love which is unshakable and which is greater than the love (the Bhakta has) for any other thing.