External Classification
Beyond the traditionally recognized families of Southeast Asia, a number of possible broader relationships have been suggested. One of these is the "Sino-Caucasian" hypothesis of Sergei Starostin, which posits that the Yeniseian languages and North Caucasian languages form a clade with Sino-Tibetan. The Sino-Caucasian hypothesis has been expanded by others to "Dené–Caucasian" to include the Na-Dené languages of North America, Burushaski, Basque and, occasionally, Etruscan. Edward Sapir had commented on a connection between Na-Dené and Sino-Tibetan. (A narrower binary Dené–Yeniseian family has recently been well-received, but is not yet conclusively demonstrated.) In contrast, Laurent Sagart (2005) proposes a Sino-Austronesian family relating Sino-Tibetan to the Austronesian languages.
Read more about this topic: Sino-Tibetan Languages
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“The boundary line between self and external world bears no relation to reality; the distinction between ego and world is made by spitting out part of the inside, and swallowing in part of the outside.”
—Norman O. Brown (b. 1913)