The viola has always been one of the most appreciated flowers, both for the aesthetic aspect and for the delicate fragrance, from all peoples and at all times. The ancient Romans and the Arab populations used to add purple flowers to the drinks or extracts thereof, in order to make the drink more delicate and pleasant. Many poets have celebrated and inserted in their works the viola, as one of the most beautiful and delicate flowers; equally recurrent is the representation of the flower in paintings and decorations. Finally, the use of the flower to obtain perfumes and essences is famous. Purpleing flowers is the emblem of humility and modesty.