Siddhartha Gautama, born into the Shakya gana as a Kshatriya prince, left home seeking the cause of human suffering. After years of meditation, he attained enlightenment under a sacred pipal tree at Bodh Gaya in Bihar. From then on, he was known as the Buddha ("The Enlightened One").
- Gave his first sermon at Sarnath near Varanasi (commemorated by the famous Sarnath Stupa).
- Taught that life is full of suffering (dukkha) caused by cravings and desires (tanha or thirst), which can be removed by following the Middle Path of moderation.
- Emphasized Ahimsa (non-violence to humans and animals) and the law of Karma (our actions affect our current and future lives).
- Preached in the language of ordinary people: Prakrit. Passed away at Kusinara.