fear

Fear is a powerful biological feeling of unpleasant risk or danger, either real or imagined.
Psychologists have argued that fear, along with a few other basic emotions such as joy and anger, is innate in all human beings. Fear is a defensive, survival advantage, and may have evolved in a variety of organisms. It is usually a response to a particular stimulus. For example, a person may see a huge monster before them and fear, the defensive tool is everyone warns them about the danger and shuns from it thus telling them to escape from the monster and be safe from danger.

thus, when someone say... never fear sth... screw them.. scratch that.. fear it.. but choose the right battles to fight... a lost battle doesnt mean a lost war..