The word amateur has come by the thousand oddities of language to convey an idea of tepidity; whereas the word itself has the meaning of passion. Nor is this peculiarity confined to the mere form of the word; the actual characteristic of these nameless dilettanti is a genuine fire and reality. A man must love a thing very much if he not only practises it without any hope of fame or money, but even practises it without any hope of doing it well.
Source: Robert Browning