Quotes:Udana

H. P. Blavatsky

Udâna. Extemporaneous speeches; also Sûtras. In philosophy the term applies to the physical organs of speech, such as tongue, mouth, voice, etc. In sacred literature in general, it is the name of those Sûtras which contain extemporaneous discourses, in distinction to the Sûtras that contain only that subject matter which is introduced by questions put to Gautama the Buddha and his replies.

Source: H. P. Blavatsky, The Theosophical Glossary, art. Udana