"Sentimentality has never been planted" is a wise saying. Affectionate refers to people's emotional richness, love, resentment, hatred and admiration, but in reality, how many people's affection has become heartless. Because people need to consider many factors in social life, sometimes they have to let go of their feelings for the benefit of themselves or their families. Therefore, "sentimentality" does not completely dominate our actions, and many times we need to put a low profile and take into account reality.

"Since ancient times, species have been ruthless", which means that in the competition for survival, human beings need to remain calm and rational, and cannot be bound by feelings. In the war and political struggle, decision makers need to get rid of the emotional bondage and take calm, rational and brave actions to deal with many complicated situations. So "ruthlessness" is necessary in some cases. Only by rationally analyzing the present situation can we win.

"Since ancient times, love has been ruthless" is also a kind of helplessness to human nature. It is often difficult for us humans to completely control our emotions. In the face of emotional impulses, it is difficult for us to be completely reasonable and rational. Even if we can make calm decisions on many occasions, many people will lose their minds and let go of their affection in the face of affectionate love and affection. Therefore, "sentimental and ruthless since ancient times" is not only an attitude towards reality, but also an understanding of human nature.