There is a modern tendency to consider a human being as "just another animal," albeit an intelligent one. This article highlights the uniqueness of human beings. Although there is a remarkable physical similarity between humans and the great apes, the gulf between these is qualitatively huge, in terms of cultural, psychological (including emotional and mental characteristics), and spiritual aspects. Humans have a complex language, use symbols in communication, write and read books, have set up diverse systems of governance, have remarkable self-awareness, conduct scientific experiments, practice religious traditions, have developed complex technologies, and so forth. Unification Thought, as with many other philosophies and spiritual traditions, recognize one of the most fundamental differences is the inner essence, spirit, or soul that humans have and that continues after death. In Unification Thought there is a view that humans have not only a physical body with physical senses, but also an immaterial or spiritual body with spiritual senses. This spiritual body is considered to mirror the appearance of the physical body, but also exists after the death of the material form. It is the inner essence that gives rise to the many other remarkable aspects of being human: extensive parental care, ethics, language, altruism toward even competitors and enemies, and so forth.
This article also deals with the speculation of some scientists and laypeople that humans are not a monogamous species, but are by nature promiscuous. From the point of view of Unification Thought, humans' original nature is to form lasting pair bonds between male and female and raise children in a family, but this ideal is often not fulfilled because of the separation from God. This separation has also manifested in so many other cultural ills: Racism, war, slavery, and so forth. Even other animal species do not practice racism, war, or slavery among members of the same species. From the point of view of Unification Thought, all people are children of the same God. From a biological point of view, whereby a species is composed of freely interbreeding individuals, racism might best be viewed as not accepting to marry, or have one's children marry, someone of another race.