In this book Tenkei Roshi provides guidelines for Zen Buddhist practice based on the "Four Modes of Meditation" that he developed over recent years at Zen River Temple in The Netherlands. He also addresses how these modes can be extended to koan training, ritual, study, work, and social interaction. Timeless Calling, Timely Response aims to serve as an inspiration for anyone interested in hearing their life's calling and finding their own way to respond to it.