What is the source of illness?

Question

1. Is the study of Zen only for healthy people?
   2) If I begin studying Zen, will I immediately lose my selfishness?
   3) Is Zen practice sometimes dry and uncomfortable at first?
   4) My real question is: what is the source of illness?
   Thank you.
   
   
   

Anonymous

Answer from Master Kosen

1. Yes. 2) Yes. 3) Yes. 4) Birth.
   

Kosen

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