Happiness
In the Individiual Vehicle, there is the happiness of Nirvana, spiritual release The Third Holy Fact (Noble Truth) is the one that Buddha staked his life's work on, the Holy Fact of Cessation of, Freedom from, Suffering. This was his good news, his discovery that he found worth sharing with other beings. Upon realizing his own freedom, he is reported to have said, "Deep, peaceful, fabrication-free, translucent, uncreated - I have discovered a Reality like elixir of immortality. Whoever I might teach about it, they won't understand; better to stay in silence in the forest!". Later, when he had become more optimistic about peoples' ability to respond to his instructions, he sent out his mendicants to spread the word, telling them to announce that "The gates of Nirvana have been opened!"
In the Pali Suttas, Nirvana is variously described as ... In the Abhidharma, it is considered to have four aspects; In the Universal Vehicle, there is the happiness of Buddhahood, social and cosmic, the perfecting and adorning of the buddhaverse, and the liberating of all beings. In the Apocalyptic Vehicle, there is the happiness of Vajradharahood, spiritual, social, cosmic, and aesthetic, sensuous, and even sexual, the blissvoid indivisibility of cosmic orgasm, Vajradhara as orgasmic bliss-wisdom (sahajananda-jnana) in union with the Universal Mother Void-form (Vishvamatashunyarupa), the Universal Consort (Mahamudra), the Great Perfection (Mahasandhi) of consummate union with the All-good Mother Goddess Transcendent Wisdom, and so forth. In the Ashokavadana, there is a standard, page-long, stock description of the Buddha's smile.