Dante coined the word "transhumanise" in the Divine Comedy, 700 years ago. "Trasumanar" is the transformation he will undergo in order to share in the life of paradise.
Today, the word has associations that are strikingly related to Dante's; partly quite similar, though changed in subtle but crucial ways. Understanding those differences illuminates the dangers of transhumanism today and how it might limit, not expand, our humanity.
I consider this constriction across half a dozen areas on the transhumanism agenda: telepathy, happiness, intelligence, stellar living, the superman, and death.
Transhumanising is a religious promise. It becomes a modern threat when that transcendent perspective is eclipsed and lost.