“It is awfully important to know what is and what is not your business.”
"What Is English Literature?" (1935)
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Gertrude Stein 160
American art collector and experimental writer of novels, p… 1874–1946Related quotes

“My business is to paint what I see, not what I know is there.”
Turner, quoted in: Donald B. MacCulloch (1927) The Wondrous Isle of Staffa, p. 160
Alternative quote:
My job is to paint what I see, not what I know
As quoted in: George Seferis (1999) A Poet's Journal: Days of 1945-1951. p. 105
undated quotes

“What do you think about me is not my business the important thing is what I think about myself…”
Source: Rich Dad's Cashflow Quadrant: Rich Dad's Guide to Financial Freedom

“Of what must be said and what must not be said. The importance of knowing.”

“It is not so much what we know that is important, as what we are and what we do.”
“It's important to know what you don't want, but it's vital to know what you DO want.”
Source: Life, the Truth, and Being Free (2010), p. 152

Statement in conversation with John Croker https://en.wikipedia.org/wiki/John_Wilson_Croker and Croker's wife (4 September 1852), as quoted in The Croker Papers: The Correspondence and Diaries of the Late Right Honourable John Wilson Croker, LL.Dm F.R.S, Secretary of the Admiralty from 1809 to 1830 (1884), edited by Louis J. Jennings, Vol.III, p. 276.

Eryximachus, p. 52
L'Âme et la danse (1921)