For example, he affirmed: "In general I have deducted that for the cases of epilepsy, hysteria, Huntington disease and migraines, which are joined in my observations, that the hereditary and hygienic influence under its distinct phases, is the chief pathogenic cause of these neuroses, and that the influence of consanguinity of spouses is secondary and proportional to the first" 1883, p.21.
Por ejemplo afirmaba: "De una manera general he deducido por los casos de epilepsia, histeria, corea y jaqueca, que he reunido en mis observaciones, que la influencia hereditaria e higiénica bajo sus distintas fases, es la causa patogénica capital de estas neurosis, y que la influencia de la consaguinidad de los esposos, es secundaria y proporcional a la primera" 1883, p.21.