zen logic
Without claiming to understand much of Zen (if that's even the point), here's a koan that seems to sum up its spirit nicely:
A master was asked the question, "What is the Way?" by a curious monk.
"It is right before your eyes," said the master.
"Why do I not see it for myself?"
"Because you are thinking of yourself."
"What about you: do you see it?"
"So long as you see double, saying 'I don't', and 'you do', and so on, your eyes are clouded," said the master.
"When there is neither 'I' nor 'You', can one see it?"
"When there is neither 'I' nor 'You', who is the one that wants to see it?"
(Quoted in Hofstadter's 'Gödel, Escher, Bach'.)