Peaceful Action, Open Heart, p47-48A phrase that appears often in Buddhist texts is, “The three realms are in disturbance, just like a house on fire.” According to classical Buddhist thought, the three realms are three levels of existence in the world of samsara: the realm of desire (kamadhatu), the ordinary world we inhabit, where beings are subject to the three poisons of greed, anger, and delusion; the realm of form (rupadhatu), a higher realm of existence in which beings have severed some attachments; and the realm of formlessness (arupadhatu), the highest realm of samsaric existence in which beings are free of attachment to form. Even though the higher two of the three realms may offer some respite from the afflictions, all three are still samsara. None of the three realms can provide real peace or security. They are like a burning house, full of traps and dangers.
Imagine a group of chickens in a cage. They fight each other to get the corn, and they fight over whether the corn or the rice tastes better. And while they are competing with each other over a few kernels of corn or grains of rice, they are unaware that in a few hours they will be taken to the slaughterhouse. We too live in a world full of insecurity, but we don’t see it because we’re so caught up in our craving and delusions.