"There are beings with diversity of body and singularity of perception, such as the devas of the Brahma hosts generated by the first [jhana] and some beings in the four realms of deprivation. This is the second station of consciousness. [2]
DN 15
PTS: D ii 55
Maha-nidana Sutta: The Great Causes Discourse
Seven Stations of Consciousness
translated from the Pali by
Thanissaro Bhikkhu
http://www.accesstoinsight.org/tipitaka ... .than.html
What would be a singular perception?
