In his work Brothers and Sisters. One Divided by Two, the psychoanalyst Massimo Recalcati explores the sibling relationship beyond the ties of blood.

With his many years of clinical experience and his psychoanalytic approach to the biblical Word, he demonstrates that brotherhood is not a law of nature, but the result of language and desire.

It is a condition that dissolves the fantasy of the One and leads to the acceptance of the Two. "I hate you" thus becomes the precursor of "I love you," allowing brotherhood to be expressed through the overthrow of the fanaticism of the One.