The Greek philosopher sentenced to death for corrupting the youth was Socrates. In 399 BC, he was charged with impiety and corrupting the youth of Athens. He was known for his Socratic method of questioning, encouraging critical thinking and moral introspection. His unconventional ideas and emphasis on ethics challenged societal norms, which led to his trial and subsequent death sentence. Rather than fleeing or retracting his beliefs, Socrates chose to accept his fate, viewing it as an opportunity to uphold his principles. His legacy has profoundly influenced Western philosophy and ethical thought, marking him as a pivotal figure in the history of ideas.