Modern psychologists view anger as a normal, natural, and mature emotion experienced by virtually all humans at times, and as something that has functional value for survival. Uncontrolled anger can, however, negatively affect personal or social well-being and impact negatively on those around them. While many philosophers and writers have warned against the spontaneous and uncontrolled fits of anger, there has been disagreement over the intrinsic value of anger. The issue of dealing with anger has been written about since the times of the earliest philosophers, but modern psychologists, in contrast to earlier writers, have also pointed out the possible harmful effects of suppressing anger.