I have read a few papers and discourses that say Master Dogen used koans in his practice. He even wrote a second Shobogenzo, the Shinji Shobogenzo. SInce we trace the lineage of our teacher to Master Dogen, why do we not use koan in our practice? I know Jundo said that there are teachers in Soto Zen that do use koan somewhat, but if Master Dogen used them, shouldn't we also? Realization by whatever means are available, all paths up the mountain, something like that?
I'd love to hear everyone's thoughts.