"If a blind man leads a blind man, both will fall into a pit."

"Beware of false prophets, who come to you in sheep's clothing but inwardly are ravenous wolves."

"Let your 'Yes' be 'Yes,' and your 'No,' 'No'; anything beyond this comes from the evil one."

"If anyone wants to be first, he must be the very last, and the servant of all."

"For what will it profit a man if he gains the whole world and forfeits his soul? Or what shall a man give in return for his soul?"