Nothing is so powerful as an ...

Nothing is so powerful as an insight into human nature... what compulsions drive a man, what instincts dominate his action. If you know these things abut a person, you can touch him at the core of his being.
Nothing is so powerful as an insight into human nature... what compulsions drive a man, what instincts dominate his action. If you know these things abut a person, you can touch him at the core of his being.
 William Bernbach

More phrases

Effort only fully releases its reward after a person refuses to quit.
Never complain and never explain.
A good plan violently executed now is better than a perfect plan executed next week.
 George S. Patton
Problems are not stop signs, they are guidelines.
 Robert Schuller
Never give up, for that is just the place and time that the tide will turn.
 Harriet Beecher Stowe

Quotes from the same author

An idea can turn to dust or magic, depending on the talent that rubs against it.
 William Bernbach
Don't confuse good taste with the absence of taste.
 William Bernbach
If your advertising goes unnoticed, everything else is academic!
 William Bernbach
Properly practiced creativity MUST result in greater sales more economically achieved. Properly practiced creativity can lift your claims out of the swamp of sameness and make them accepted, believed, persuasive, urgent.
 William Bernbach
Word of mouth is the best medium of all.
 William Bernbach