Bassui Tokushō

was a Rinzai Zen Master born in modern-day Kanagawa Prefecture who had trained with Sōtō and Rinzai Zen-masters. Bassui was tormented by the question what the soul is, or "Who is the one that sees, hears, and understands?" This question was also central in his teachings, and still inspires present-day Zen-practitioners. Provided by Wikipedia