The basic observations and socio-logic

DURABILITY OF X's NATURE / DURABILITY OF IDENTITY

no need to teach X things belonging to its character; hopeless to teach t-s not b. to X's character

The literature references of the proverb type:

Abbreviation: RP

Champion, Selwyn Gurney: Racial Proverbs. 2nd ed. 1950 London. glob>ENG*

Proverb on page: 394. Proverb number(s) on page: 31.

Abbreviation: Stra

Strauss, Emanuel: Dictionary of European Proverbs 1994 New York: Routledge /Questia.com. ENG,GER,FR,SPA,ITA,LAT

Proverb number(s): 25, 418, 729, 795, 1196. Additional number(s) and notes: 1275.

Never went out ass, and came home horse / Cut off a dog's tail and he will be a dog still / EIn Aff bleibt ein Aff, er mag König werden oder Pfaff / Lupus pilum mutat, non mentem (Latin)

Abbreviation: Swi

Swierczynska, Dobrosl#awa -- Swierczynski, Andrzej: Patarliu z#odynas. 9 kalbom. (Lietuvishkosios dalies sudarytoja Rasa Kashetiene) 2000 Vilnius: Tyto Alba.. LITH, POL, ENG, FR, SPA, GER, RUS, ITA, LAT

Proverb number(s): 380.

if an ass goes a-travelling he'll not come home a horse. / Chi bestia va a Roma, bestia ritorna.