Charles Boutell, The Handbook to English Heraldry
“ In supporting a Shield of Arms, they discharge an heraldic duty: but, in themselves, Supporters are armorial symbols 243 of a high rank; and, with peculiar emphasis, they record descent, inheritance, and alliance, and they blazon illustrious deeds.Supporters should always be represented in an erect position. In whatever direction also they actually may be looking, they always ought to appear to fulfil their own proper office of giving vigilant and deferential support to the Shield. ”
