The Tarka Sangraha of Annambhatta with his expository gloss on it, called Dipika, is the most popular introductory work on the Nyaya- Vaiseshika system of Indian philosophy. Sanskrit Text, word by word meanings, and commentary.
We must be bright and cheerful. Long faces do not make religion. Religion should be the most joyful thing in the world, because it is the best.
-Swami Vivekananda