Zen - as Mornings Son understands it after a intensiv retreat with and old zen master.

[Blue totem]

Once, Taizen Deshimaru was asked to give a lecture on zen.
So he arrived at the conference hall full of people.
He adressed the audience and said; this is zen,
so he sat in the lotus position and started zazen.
He stayed there on and on.
Gradually the croud got smaller and smaller,
until there was no one left...