3.
Never underestimate the predictability of stupidity.
Vinnie Jones
4.
Never underestimate the power of compassionately recognizing what's going on.
Pema Chodron
5.
Never underestimate the power of a city to regenerate.
Jane Jacobs
9.
Never underestimate the narcissism of a writer.
Elia Kazan
10.
Never underestimate the booberie of the booboisie.
H. L. Mencken
12.
Never underestimate those who you scar.
Lauryn Hill
13.
Never underestimate the power of a well-placed apostrophe.
Holly Smale
16.
never underestimate your dumbness!!
Jim Benton
17.
Never underestimate the bad taste of the American public
H. L. Mencken
19.
Never underestimate the power of a bossy woman.
Karen Hawkins
20.
Never underestimate the power of Abby Joseph Cohen.
Alex Berenson
21.
Never underestimate your fans; they'll tell you exactly what they like.
Aaron Tippin
23.
Never underestimate their intelligence, always underestimate their knowledge.
Frank Delaney