"Talk sense to a fool and he calls you foolish"

This quote by Euripides is a pointer that attempting to reason with someone who is not open to factor can be an unproductive venture. It suggests that when somebody is not going to listen to factor, they may react to it with derision or mockery. This quote is a warning to not lose time attempting to explain something to somebody who is not willing to listen. It is also a tip that it is very important to be aware of when somebody is closed to reason and to not take it personally when they respond with hostility. It is important to bear in mind that it is not our fault if someone is not willing to listen to reason, and that it is better to move on and concentrate on those who are open to reason.