While I am quite in agreement with the critics to transhumanism elaborated by Allegra in the book Visioni transumane. Tecnica, salvezza, ideologia, the alternative to transhumanist perspective that he argues for in this book is not completely clear to me, unless it is just the revival of a metaphysical-anthropological framework grounded on a "strong" idea of human nature. Against such perspective I argue for the necessity to keep the difference between posthumanism and transhumanism and to go back to the original meaning of physis.