Authors:

The young leading the young, is like the blind leading the blind; "they will both fall into the ditch.

Lord Philip Dormer Stanhope Chesterfield, Philip Dormer Stanhope Earl of Chesterfield (1855). “The Works of Lord Chesterfield: Including His Letters to His Son, Etc : to which is Prefixed, an Original Life of the Author”, p.165
The young leading the young, is like the blind leading the blind; they will both fall into the ditch.