Decorative ideas came from American Indian, Egyptian, and early classical sources as well as from nature.
Later mystics commented extensively upon the classical sources and, sometimes, translated them into their mother tongues.
The dances are both gleeful and serious, with material from both folk and classical sources.
They did so, raiding classical sources such as Tchaikovsky's Fifth to create an invented opera within it, La Tsarita.
In other works, he combined his music with literary ruins -- texts from the Greek plays or other classical sources.
The major features of Asian drama may be seen in the three great classical sources of India, China, and Japan.
Their origin is unclear, but, according to Classical sources, they presided at all religious ceremonies, where they chanted "theogonies".
His captivating lecture style and copious quotations from classical sources made him extremely popular, especially among American Muslim youth.
So the treatise must fall back on whatever evidence it can muster from the classical sources that seems to modify the basic rules.
It has the blocky, earnest integrity of a classic comic book, and it labors to respect the strangeness and grandeur of its classical sources.
Chaucer long ago appealed against "miswriting of our tongue", and purists in later centuries tried to fix and standardise English by tethering its vocabulary to classical sources.
