“…Lithium has been used with benefit in the treatment of mania (Cade, 1949;Schou, 1959;Gershon & Yuwiler, 1960) and there are studies suggesting prophylactic activity in manicdepressive illness and unipolar depression (Schou & Baastrup, 1967;Angst, Weis, Grof, Baastrup & Schou, 1970;Baastrup, Poulsen, Schou, Thomsen & Amdisen, 1970;Coppen, Noguera, Bailey, Burns, Swarin, Hare, Gardner & Maggs, 1971). The use of lithium in the therapy of these disorders came about empirically, but hopefully, an understanding of the mechanisms of action of lithium should throw light not only upon the processes by which it exerts its therapeutic effect but also upon the pathogenesis of these psychiatric illnesses.…”