If the blind lead the blind, both shall fall into the ditch.
More English Proverbs:
Always sample a maidens charms before the wedding.English
A man has a choice to begin love, but not to end it.
English
Better bad than without.
English
Be not deceived with the first appearance of things, for show is not substance.
English
A house is a fine house when good folks are within.
English
Why pay for the cow when the milk is free?
English