Sri Madhvacarya: His Life, Religion and Philosophy
Swami Tapasyananda
Madhvacharya points out how Bhakti is both a means and an end in itself. Knowledge generates love and love strengthens knowledge. Madhvacharya is a very fine logician and holds the doctrine of the five types of difference or Bheda.
You must avoid excessive merriment. A mind in that state never becomes calm; it becomes fickle. Excessive merriment will always be followed by sorrow. Tears and laughter are near kin. People so often run from one extreme to the other.
-Swami Vivekananda