Osho declares that this earth is a big madhouse.
But people are living in such an insane state. This state is insane! People feel offended when I say that the whole of humanity is insane, but what can I do? – it is so. The fact has to be stated, howsoever painful it is. I am also pained by it, I feel sorry for humanity, but it has to be said: that the whole of humanity is mad. What you call normal human beings are not normal at all. They are normally mad, certainly; their madness is almost the same, hence they are normal. But they are not the norm, they are not the principle, they are not the criterion of health. The whole earth is a big madhouse.
Osho, The Dhammapada: The Way of the Buddha, Vol 1, Ch 9 (excerpt)