“Cattārimāni, bhikkhave, acinteyyāni, na cintetabbāni; yāni cintento ummādassa vighātassa bhāgī assa. “Mendicants, these four things are unthinkable. They should not be thought about, and anyone who tries to think about them will go mad or get frustrated. Lokacintā, bhikkhave, acinteyyā, na cintetabbā; Speculation about the world … Imāni kho, bhikkhave, cattāri acinteyyāni, na cintetabbāni; yāni cintento ummādassa vighātassa bhāgī assā”ti. These are the four unthinkable things. They should not be thought about, and anyone who tries to think about them will go mad or get frustrated.” "