Hardly anyone living on the globe will deny that he is "experiencing," "feeling," "suffering," "rejoicing," etc. All these well-distinguished subjective states are an integral part of our lives. By creating the contrast of our states, experiences are the engines of acts and achievements that lift a person to higher and higher levels of social progress. Emotions are an objectively existing phenomenon of nature; they accompany our whole life and help us to determine the usefulness and harmfulness of external or internal situations that have developed at the moment.