My mistake, 2 mis-quotes in one post,the correct is,
Equo ne credite, Teucri. Quidquid id est, timeo Danaos et dona ferentis.

Do not trust the horse, Trojans. Whatever it is, I fear the Greeks even when they bring gifts. Virgil, Aeneid bk. 2, l. 48 O put not your trust in princes, nor in any child of man: for there is no help in them. Psalm 146, v. 2 Book of common prayer