"A word to the wise ain't necessary - it's the stupid ones that need the advice"

This quote by Bill Cosby is an amusing way of stating that smart people don't need advice due to the fact that they already know what to do. It suggests that it is the people who are not smart, or "silly ones," who require guidance. This quote is a suggestion that knowledge is a crucial quality to have which it is necessary to seek advice from those who are smarter than us. It likewise indicates that it is important to be modest and open up to advice, even if we think we understand what to do. This quote is a pointer that it is very important to be wise and to consult from those who are better than us. It is also a tip that it is very important to be humble and open up to guidance, even if we believe we know what to do. Eventually, this quote is a pointer that knowledge is an important quality to have which it is very important to consult from those who are better than us.