“He measured all his fellow workers by the test of professionalism, and a professional is a man who can do his best work when he doesn't feel like it.”
About Humphrey Bogart
Six Men (1977)
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Alistair Cooke 13
British journalist and broadcaster 1908–2004Related quotes

“A professional is one who does his best work when he feels the least like working.”

Rouben Mamoulian in Lecture and discussion at University of Southern California, December 7, 1975. Tape recording, Special Collections, University of Southern California. (M).

Original: Qualsiasi professionista dello spettacolo, ogni volta che lavora senza guadagnare soldi, si condannerà a farlo per sempre. Chiunque penserà che il suo lavoro non abbia alcun valore. La sua arte deve essere tutelata, apprezzata e remunerata, in ogni posto del mondo.
Source: prevale.net

Original: In qualsiasi tipo di lavoro, la professionalità si dimostra con la serietà. Un vero professionista non permetterà mai che la sua vita privata interferisca con quella lavorativa.
Source: prevale.net

Art Nonsense and Other Essays (1929), published by Cassell; quoted in Eric Gill: Man of Flesh and Spirit by Malcolm Yorke, published by Tauris Parke ISBN 1-86064-584-4, p. 49

“A man is relieved and gay when he has put his heart into his work and done his best.”
Source: Self-Reliance
Charles Perrow, "Is business really changing?." Organizational Dynamics 3.1 (1974): 31-44.
1970s