I have been thinking about this a bit, lately.
After years on his cushion, a monk has what he believes is a breakthrough: a glimpse of nirvana, the Buddhamind, the big pay-off. Reporting the experience to his master, however, he is informed that what has happened is par for the course, nothing special, maybe even damaging to his pursuit. And then the master gives the student dismaying advice: If you meet the Buddha, he says, kill him.
Why kill the Buddha? Because the Buddha you meet is not the true Buddha, but an expression of your longing. If this Buddha is not killed he will only stand in your way.