of the Purusha Sukta of the Rig Veda. Seven Rishis – Atri, Bharadwaja, Gautama, Jamadagni, Kasyapa, Vasishtha, Viswamitra. Other Vedic Rishis – Gritsamada, Sandilya, Kanva etc. Rishaba – Rishi mentioned in Rig Veda and later in several Puranas, and believed by Jains to be the first official religious guru of Jainism, as accredited by later followers. Yajnavalkya – one of the Vedic sages, greatly influenced Buddhistic thought. Lopamudra Gargi Vachaknavi Maitreyi Parshvanatha Ghosha Angiras – one of the seers of the Atharva Veda and author of Mundaka Upanishad. Uddalaka Aruni – an Upanishadic sage who authored major portions of Chāndogya Upaniṣad. Ashvapati – a King in the Later Vedic age who authored Vaishvanara Vidya of Chāndogya Upaniṣad. Ashtavakra – an Upanishadic Sage mentioned in the Mahabharata, who authored Ashtavakra Gita. Philosophers of Axial Age (600–185 BCE) Gotama (), logician, author of Nyaya Sutra Kanada (), founded the philosophical school of Vaisheshika, gave theory of atomism Mahavira (599–527 BCE) – heavily influenced Jainism, the 24th Tirthankara of Jainism. Purana Kassapa Ajita Kesakambali Payasi Makkhali Gośāla Sañjaya Belaṭṭhiputta Mahavira Dandamis Nagasena Lakulisha Pakudha Kaccayana Pāṇini (520–460 BCE), grammarian, author of Ashtadhyayi Kapila (), proponent of the Samkhya system of philosophy. Badarayana (lived between 500 BCE and 400 BCE) – Author of Brahma Sutras. Jaimini (), author of Purva Mimamsa Sutras. Pingala (), author of the Chandas shastra Gautama Buddha ( – ), founder of Buddhist school of thought Śāriputra Chanakya ( – ), author of Arthashastra, professor (acharya) of political science at the Takshashila University Patañjali (), developed the philosophy of Raja Yoga in his Yoga Sutras. Shvetashvatara – Author of earliest textual exposition of a systematic philosophy of Shaivism. Philosophers of Golden Age (184 BCE – 600 CE) Valluvar (), wrote the Kural text, a treatise on secular ethics. Aśvaghoṣa, He is believed to have been the first Sanskrit dramatist, and is considered the greatest Indian poet prior to Kālidāsa. Vatsyana, Famous for "Kama Sutra" Samantabhadra, He was a proponent of the Jaina doctrine of Anekantavada. Isvarakrsna, Aryadeva, Aryadeva was a student of Nagarjuna and contributed significantly to the Madhyamaka Dharmakirti Haribhadra Pujyapada Buddhaghosa Kamandaka Maticandra Prashastapada Bhāviveka Dharmapala Udyotakara Gaudapada Siddhasena Dignāga (), one of the founders of Buddhist school of Indian logic. Asanga (), exponent of the Yogacara Bhartrihari (–510 CE), early figure in Indic linguistic theory Bodhidharma (–528 CE), founder of the Zen school of Buddhism Siddhasena Divākara