“Collection of Eight Chapters”
Prof. George Cardona in: Indo-Aryan languages http://www.britannica.com/EBchecked/topic/286348/Indo-Aryan-languages/74594/Characteristics-of-Old-Indo-Aryan-texts#ref603388, britannica.com., 20 January 2014.
“The accepted cultivated speech of the contemporary language that Pāṇini describes in his Aṣṭādhyāyī must have coexisted with more vernacular varieties of speech in which there were features belonging to the Middle Indo-Aryan division of the language group. Several facts support this view.”
Prof. George Cardona in:"Indo-Aryan languages".
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Pāṇini 37
ancient Sanskrit grammarianRelated quotes

Source: Introduction to semantics, 1962, p. 316

Who were the Shudras? (1946)

The Conquest of a Continent (1933)

“The real problem in speech is not precise language. The problem is clear language.”
" New Textbooks for the "New" Mathematics http://calteches.library.caltech.edu/2362/1/feynman.pdf", Engineering and Science volume 28, number 6 (March 1965) p. 9-15 at p. 14
Paraphrased as "Precise language is not the problem. Clear language is the problem."
Context: The real problem in speech is not precise language. The problem is clear language. The desire is to have the idea clearly communicated to the other person. It is only necessary to be precise when there is some doubt as to the meaning of a phrase, and then the precision should be put in the place where the doubt exists. It is really quite impossible to say anything with absolute precision, unless that thing is so abstracted from the real world as to not represent any real thing.Pure mathematics is just such an abstraction from the real world, and pure mathematics does have a special precise language for dealing with its own special and technical subjects. But this precise language is not precise in any sense if you deal with real objects of the world, and it is only pedantic and quite confusing to use it unless there are some special subtleties which have to be carefully distinguished.

“The language of poetry is the only speech which has in it the power of permanent impression”
Introduction
Bards of the Bible, 1850

Who were the Shudras? (1946)

Responding to a question from a Reddit user about whether open racism and slurs are allowed on the platform. As quoted in Open racism and slurs are fine to post on Reddit, says CEO https://www.theguardian.com/technology/2018/apr/12/racism-slurs-reddit-post-ceo-steve-huffman (12 April 2018) by Samuel Gibbs, The Guardian.
“Whorf's brilliant analysis… seemed to support the view that man is a prisoner of his language.”
Word Play (1974)
Context: About 1932 one of Sapir's students at Yale, Benjamin Lee Whorf drew on Sapir's ideas and began an intensive study of the language of the Hopi Indians of Arizona. Whorf's brilliant analysis... seemed to support the view that man is a prisoner of his language. Whorf emphasized grammar—rather than vocabulary, which had previously intrigued scholars—as an indicator of the way a language can direct a speaker into certain habits of thought.