Watch out for the fellow who talks about putting things in order! Putting things in order always means getting other people under your control. Denis Diderot
I think you've got to watch out for anybody in high school who says he wants to become an economist. Thomas J. Sargent
Me, I'm dishonest, and you can always trust a dishonest man to be dishonest. Honestly, it's the honest ones you have to watch out for. Johnny Depp
We keep an eye on the scorpion and the serpent, but we do not watch out for the millipede. Sicilian Proverb
Watch out for the unexpected mushroom. Sicilian Proverb
Watch out for the dog that doesn't bark and the man who says nothing. Spanish Proverb