Authors:

Don't think so much of your own Cunning, as to forget other Men's; a Cunning Man is overmatched by a cunning Man and a Half.

Benjamin Franklin (1987). “Poor Richard's Almanack: Being the Choicest Morsels of Wisdom, Written During the Years of the Almanack's Publication”, p.65, Peter Pauper Press, Inc.
Don't think so much of your own Cunning, as to forget other Men's; a Cunning Man is overmatched by a cunning Man and a Half.