to study its vast arcana and corpus in an analytical fashion. This endeavor drove the deciphering and preservation of Sanskrit. Many translations of Hindu texts were produced which made them accessible to a broader reading audience. In the early 18th century, Christian missionary Bartholomäus Ziegenbalg engaged in dialogues with several Tamil-speaking "Malabarian" Hindu priests, and recorded arguments of these Hindu apologists. These records include German-language reports submitted to the Lutheran headquarters in Halle, and 99 letters written by the Hindu priests to him (later translated into German under the title Malabarische Korrespondenz from 1718 onwards). During 1830-1831, missionary John Wilson engaged in debates with Hindu apologists in Bombay. In 1830, his protege Ram Chandra, a Hindu convert to Christianity, debated with several Hindu Brahmin apologists in public. Hindu pandit Morobhatt Dandekar summarized his arguments from his 1831 debate with Wilson in a Marathi-language work titled Shri-Hindu-dharma-sthapana. Narayana Rao, another Hindu apologist, wrote Svadesha-dharma-abhimani in response to Wilson. In the mid-19th century, several Hindu apologist works were written in response to John Muir's Mataparīkṣā. These included Mata-parīkṣā-śikṣā (1839) by Somanatha of Central India, Mataparīkṣottara (1840) by Harachandra Tarkapanchanan of Calcutta, Śāstra-tattva-vinirṇaya (1844-1845) by Nilakantha Gore of Benares, and a critique (published later in 1861 as part of Dharmādharma-parīkṣā-patra) by an unknown Vaishnava writer. A range of Indian philosophers, including Swami Vivekananda and Aurobindo Ghose, have written rational explanations regarding the values of the Hindu religious tradition. More modern proponents such as the Maharishi Mahesh Yogi have also tried to correlate recent developments from quantum physics and consciousness research with Hindu concepts. The late Reverend Pandurang Shastri Athavale has given a plethora of discourses regarding the symbolism and rational basis for many principles in the Vedic tradition. In his book The Cradle of Civilization, David Frawley, an American who has embraced the Vedic tradition, has characterized the ancient texts of the Hindu heritage as being like "pyramids of the spirit". Islam 'Ilm al-Kalām, literally "science of discourse", usually foreshortened to kalam and sometimes called Islamic scholastic theology, is an Islamic undertaking born out of the need to establish and defend the tenets of Islamic faith against skeptics and detractors. A scholar of kalam is referred to as a mutakallim (plural mutakallimūn) as distinguished from philosophers, jurists, and scientists. Judaism Jewish apologetic literature can be traced back as far as Aristobulus of Paneas, though some discern it in the works of Demetrius the