The word Buddha means "one who is awake." Siddhattha Gotama was born into the Sakyan people of ancient northern India, probably in the fifth century BCE. The early discourses do not give the seamless childhood biography found in later devotional literature, so a careful learner distinguishes early textual testimony from beloved later tradition. Both matter in Buddhist cultures, but they are not the same kind of source.
In the Noble Search discourse (MN 26), Gotama describes the turning point of his life. He saw that he was subject to birth, aging, sickness, death, sorrow, and corruption, yet kept seeking satisfaction in things subject to the same fate. He called this the ignoble search. The noble search begins when a person seeks what is not bound by those conditions: the unborn peace of Nibbāna. Leaving home was therefore not an adventure in self-improvement. It was a renunciation aimed at liberation.
Gotama trained under Āḷāra Kālāma and Uddaka Rāmaputta, mastered their refined meditative attainments, and judged that these states did not end birth and death. He then practiced extreme austerities until his body was close to collapse. The Greater Discourse to Saccaka (MN 36) records his realization that pain and self-torment were not the path. He remembered a naturally collected state from youth, accepted food, restored his strength, and followed a middle way between sensual indulgence and self-mortification.
On the night of awakening, Buddhist tradition says he directly knew past lives, the passing and rebirth of beings according to kamma, and the destruction of the defilements. He understood suffering, its origin, its cessation, and the path to cessation. Awakening was complete, but teaching was not automatic. MN 26 portrays him wondering whether beings attached to craving could understand a teaching that goes against the stream. Compassion moved him to teach.
This opening matters because every later doctrine belongs to this quest. Buddhism is not merely a collection of calming techniques. Its question is radical: can greed, hatred, and delusion be uprooted so completely that the cycle of suffering ends? The remaining lessons unfold the answer the Buddha gave.
After mastering the teachings of Āḷāra Kālāma and Uddaka Rāmaputta, Gotama was offered positions of leadership. He did not confuse mastery, reputation, or a subtle meditative state with the end of suffering. He left and continued the search.
Years of fasting and bodily torment did not awaken Gotama. When he remembered the collected happiness of meditation, he asked whether that wholesome pleasure might be the path. Accepting nourishment looked like failure to his five companions, but it made awakening possible.