"We can secure other people's approval, if we do it right and try hard; but our own is worth a hundred of it." -- Mark Twain

"Praise is a powerful people-builder.  Catch individuals doing something right." -– Brian Tracy

"Appreciate people.  Nothing gives more joy than appreciation." -- Ruth Smeltzer

"When someone does something well, applaud!  You will make two people happy." -- Samuel Goldwyn

"Praise works with only three types of people; men, women, and children." -– Anonymous  

"Reinforce what you want to see repeated:  What gets rewarded gets done." -– Brian Tracy