The Buddha (also known as Siddhattha Gotama or Siddhārtha Gautama), was a philosopher, mendicant, meditator, spiritual teacher, and religious leader who lived in ancient India (c. 5th to 4th century BCE). He is revered as the founder of the world religion of Buddhism. He taught for around 45 years and built a large following, both monastic and lay. His teaching is based on his insight into duḥkha (typically translated as "suffering") and the end of dukkha - the state called Nibbāna or Nirvana.
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No one who has stood for high values — love, truth, justice — has died being able to declare victory, once and for all. If we embrace values like those, we need to find ways to stand in the gap for the long haul, and be prepared to die without having achieved our goals.