The "Song of the Free", a classic text of Advaita Vedanta expresses the highest experience of the unfettered Self. Sanskrit text, transliteration and English translation. One of the purest statements of the supreme knowledge of Advaita, by a sage who lived over three thousand years ago.
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