However, Breger notes that Breuer, while he valued Freud’s contributions, didn’t agree that sexual issues were the only cause of neurotic symptoms; he wrote in a 1907 letter to a colleague that “Freud is a man given to absolute and exclusive formulations: this is a psychical need which, in my opinion, leads to excessive generalization.”
Međutim, Breger primećuje da se Brojer, mada je cenio Frojdove doprinose, nije slagao sa tim da su seksualni problemi jedini uzrok neurotičnih simptoma; u pismu jednom kolegi iz 1907. godine, napisao je da je Frojd "čovek koji je sklon apsolutnim i isključivim formulacijama: to je fizička potreba koja, po mom mišljenju, vodi preteranoj generalizaciji."