CHASTITY.

The turtle-dove is never false to its mate; and if one dies the
other preserves perpetual chastity, and never again sits on a green
bough, nor ever again drinks of clear water.

UNCHASTITY.

The bat, owing to unbridled lust, observes no universal rule in
pairing, but males with males and females with females pair
promiscuously, as it may happen.

MODERATION.

The ermine out of moderation never eats but once in the day; it will
rather let itself be taken by the hunters than take refuge in a
dirty lair, in order not to stain its purity.