A Crow caught in a snare prayed to Apollo to release him, making
a vow to offer some frankincense at his shrine. But when rescued
from his danger, he forgot his promise. Shortly afterwards, again
caught in a snare, he passed by Apollo and made the same
promise to offer frankincense to Mercury. Mercury soon appeared
and said to him, "O thou most base fellow, how can I believe thee,
who hast disowned and wronged thy former patron?"
(Translated by George Fyler Townsend, 1814-1900)