“You can never underestimate the stupidity of the general public”

“Never underestimate the power of stupid people in large groups.”

“Nobody ever lost a dollar by underestimating the taste of the American public.”

“Never underestimate yourself”

“Never, never underestimate the power of desire. If you want to live badly enough, you can live. The great question, at least for me, was: How do I decide I want to live?”

“The world attributes its misfortunes to the schemes and plottings of the very evil and powerful. I think stupidity is underestimated.”

“Never underestimate the stimulation of eccentricity.”

“Never underestimate your dumbness!”

“Never underestimate the value of knowing another's language. It can be far more powerful than swords and arrows.”

“It is said that the public is stupid. That's why those who hold it in contempt never dare to offer it something original.”