Listen to me for a second about the effects
Of a certain medicine
The pill I’m talking about is called
Penetrating One’s Nature and Becoming a Buddha
Chew it well, chew it well
Won’t you take my pill?

Hakuin Ekaku (1686 CE-1769 CE), Hakuin Ekaku was one of the most influential figures in Japanese Zen Buddhism and regarded as the reviver of the Rinzai school, refocusing it on its traditionally rigorous training methods integrating meditation and koan practice.