The Ability to influence ...

The Ability to influence people without irritating them is the most profitable art known to man.
The Ability to influence people without irritating them is the most profitable art known to man.

Quotes from the same author

Effort only fully releases its reward after a person refuses to quit.
Bravery is fearlessness-the absence of fear. The merest dolt may be brave because he lacks the mentality to appreciate his danger.
Fears are nothing more than a state of mind.
Ideas are the beginning points of all fortunes.
You might well remember that nothing can bring you success but yourself.