"Indoles" Quotes from Famous Books
 ... Helmholtz did for sound. It seems, as yet, impossible to assign any probable reason to the fact that many substances have a pleasant odor. It may, however, be worth suggesting that certain compounds, such as the volatile sulphides and the indoles, have very unpleasant odors because they are normal constituents of mammalian excreta and of putrefied animal products; the repulsive odors may be simply necessary results of evolutionary processes." (Loc. cit., ...
— Studies in the Psychology of Sex, Volume 4 (of 6) • Havelock Ellis |
