Today I've been reading the book "No Self, No Problem" and although it is by a Nyingmapa teacher of the Tibetan tradition, I recommend it to every Buddhist who feel attracted by the teachings of the Zen tradition.
"If we want to realize the truth, the first thing to remember is that we don’t have to do anything. No sacred dances. No secret mantras. No religious conversion. We just sit quietly wherever we find ourselves and simply don’t do anything. This is most important. Don’t do anything. We look directly and see what is true in that moment without labeling or judging anything. Now we see the truth which is beyond our fantasies. We also see that our mind is a conglomeration of mental events, fleeting and insubstantial. At that moment it’s impossible to become attached to any personal story line. This is a perfect moment. It lacks nothing. That recognition brings about a sense of inexhaustible joy. We might feel like we want to get up and dance wildly. If so, do it and call it sacred dance."
(Anam Thubten: No Self, No Problem, p. 84-85)
One day Yaoshan was sitting on a stone. Shitou asked what he was doing. Yaoshan said he wasn't doing anything. Shitou said, "You're just sitting here?" Yaoshan said, "Just sitting doing nothing is doing something." Shitou asked, "What exactly do you mean by 'doing nothing?" Yaoshan said, "If you asked all the sages, they wouldnt be able to tell you." Then Shitou recited a poem:
A person doesn't know how it works,
Just goes along with it naturally.
All the sages in history can't explain it,
And ordinary people don't understand it either.
(Soto Zen Ancestors in China, p. 60)
One day after Yaoshan had sat down, a monk came and asked, "What are you thinking about here by yourself?" "I'm thinking about not-thinking." "How do you think about not-thinking?" "By not thinking."
(p. 63)

