A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.
Douglas Adams

All too often miners, and indeed other trade unionists, underestimate the economic strength they have.
Arthur Scargill

Do not underestimate the determination of a quiet man.
Iain Duncan Smith

Don't underestimate the people. Let them decide.
Thaksin Shinawatra

I don't feel like I need to preach to the world or nothing like that. I just feel like I share what I say, and if listeners get it, they get it. And I never underestimate the audience's ability to feel me.
Erykah Badu

I have health. I have a wonderful support system. I have the admiration of millions of strangers, which I do not underestimate.
Kathleen Turner

I think that celebrities should never underestimate their power. I mean just to draw attention, because then people get involved on a personal level.
Debbie Gibson

I'll come in with a string of riffs and direct the musical ideas. But you still need a band and their input to make the ideas come alive. You can't underestimate band chemistry.
Billy Corgan

Let no one underestimate the need of pity. We live in a stony universe whose hard, brilliant forces rage fiercely.
Theodore Dreiser

My creative partner is a writer, and he's got an executive producing credit on this film. We've made three films together and I would never underestimate the impact of a writer.
Taylor Hackford

Never underestimate a child's ability to get into more trouble.
Martin Mull

Never underestimate people. They do desire the cut of truth.
Natalie Goldberg

Never underestimate the capacity of another human being to have exactly the same shortcomings you have.
Leigh Steinberg

Never underestimate the effectiveness of a straight cash bribe.
Claud Cockburn

Never underestimate the power of a simple tool.
Craig Bruce

Never underestimate the power of dreams and the influence of the human spirit. We are all the same in this notion: The potential for greatness lives within each of us.
Wilma Rudolph

Never underestimate the power of human stupidity.
Robert A. Heinlein

Never underestimate the power of jealousy and the power of envy to destroy. Never underestimate that.
Oliver Stone

Never underestimate the power of the State to act out its own massive fantasies.
Don DeLillo

Never underestimate the value of cold cash.
Gregory Nunn