A monomaniac is a sick person whose mentality is perfectly healthy in all respects but one; he has a single flaw, clearly localized. At times, for example, he has an unreasonable and absurd desire to drink or steal or use abusive language; but all his other acts and all his other thoughts are strictly correct.
John A. Spaulding, George Simpson, Emile Durkheim (2010). “Suicide”, p.59, Simon and Schuster
