To judge a perfume is, above all else, a matter of taste. Taste evolves under the influence of the environment, but this fact must not prohibit judging the environment. Taste evolves chiefly with the acquisition of learning, with the knowledge of facts and of aesthetic accomplishments, which makes it possible to analyze them and to provoke instructive comparisons. It is thus that each of us can progress along the road of beauty and of art. To deny the usefulness of this training would be like refusing to admit that a symphony is better appreciated after one has studied music.
— Perfumer Edmond Roudnitska, in Concerning the Circumstances Favorable to the Creation of an Original Perfume, an article which originally appeared in the April/May 1984 issue of Perfumer & Flavorist. It is available for download in PDF form at Anya's Garden.

If you read French, you may be familiar with that excellent series of cheap booklets published by Presses Universitaires de France called “Que sais-je?”. Each volume in this encyclopaedic collection covers a specific subject, and the good news is: there's one about perfume too! None other than 