Don't Put up Blinders

I know momma didn't raise no fool, so don't ever put up blinders. Sometimes we invest so much in a person that we think they can do no wrong. Its cool to have trust and faith in people, but don't underestimate ones capability. What is that saying??? Something about never letting your right hand know what your left hand is doing??? Sounds about right to me. Live life...Stay on your toes.