Here are two or three other sayings from the Talmud relative to the serpent.
Benjamin the son of Jacob, Amram the father of Moses, and Jesse the father of David all died, not because of their own sin (for they had none, says Rashi), but because of the (original) sin committed under the serpent's temptation.
Shabbath, fol. 55, col. 2.
No man was ever injured by a serpent or scorpion in Jerusalem.
Yoma, fol. 21, col. 1.
"And dust is the serpent's food" (Isa. lxv. 25). Rav Ammi says, "To the serpent no delicacy in the world has any other flavor than that of dust;" and Rav Assi says, "No delicacy in the world satisfies him like dust."
Ibid., fol. 75, col. 1.
Two negatives or two affirmatives are as good as an oath.
Shevuoth, fol. 36, col. 1.
Like two pearls were the two drops of holy oil that were suspended from the two corners of the beard of Aaron.