1. What is happiness? 27 1.1. The first pattern of the view of happiness typically existed in Vedic culture, which was pre-"Hinduism." 27 1.2. The second pattern of the view of happiness, in India, occurred obviously in the post-Vedic culture, which is "Hinduism" in the sense of my definition. 29 2. As Dr. W. Slaje discussed clearly, Vaiseikasutra tells the view of two types of happiness, one of the philosophical texts in classical India. 29 3. Vaiseikasutm is a philosophical work, established about 1st century A.D. I shall now search other examples in different texts. 30 4. I shall now treat these two words found in other texts. 32 4.1 On "abhyudaya" 32 4.2 On "nihsreyasd" 33 5. Now, I would like to sum up the results of this investigation concerning to the idea of happiness in traditional Hinduism. 34