In the article, some meaningful oppositions are discussed, which are actual in Mikhail Bulhakov's prose, such as 'professional' - 'non-professional', 'master (= creator)' - 'professional (= educated servant of the anti-creative Soviet Authority)'. The moral key of the opposition 'master' - 'professional' in Bulhakov's prose has been proved. Just this key is basic in the contemporary Russian language consciousness, where the opposition 'personal ~ impersonal' is characteristic.