A good head and good heart are always a formidable combination. But when you add to that a literate tongue or pen, then you have something very special.
— Nelson Mandela

You have such strong words at command, that they make the smallest argument seem formidable.
George Eliot formidable quote

People always make the wolf more formidable than he is.
— Proverbs

An army of deer would be more formidable commanded by a lion, than a an army of lions commanded by a stag.
— Proverbs

Discipline is the soul of an army. It makes small numbers formidable; procures success to the weak, and esteem to all.
— formidable quotation by George Washington