When satori happens or when drilling stops and mind functions no more you may feel for a single moment that you have gone mad, but in fact there is now no possibility of going mad because only a mind can go mad. Now that the mind is no more you cannot go mad. For a moment the idea of madness may come to you — because you have lived with the mind so long and suddenly it has stopped. You will be in an emptiness. That emptiness is very, very scary. It is like death. You are disappearing, losing identity. It is very paralysing — for a single moment.