
“3051. Jack of all Trades is of no Trade.”
Introductio ad prudentiam: Part II (1727), Gnomologia (1732)
" The Deer Swath http://digicoll.library.wisc.edu/cgi-bin/AldoLeopold/AldoLeopold-idx?type=turn&entity=AldoLeopold.ALDeskFile.p0799&id=AldoLeopold.ALDeskFile&isize=L" [1948]; Published in Round River, Luna B. Leopold (ed.), Oxford University Press, 1966, p. 127.
1940s
“3051. Jack of all Trades is of no Trade.”
Introductio ad prudentiam: Part II (1727), Gnomologia (1732)
“No one is a 'jack of all trades.' Be the Chief Delegation Officer, not Chief Executive Officer”
Source: https://medium.com/@mbriggs6/be-the-chief-delegation-officer-not-chief-executive-officer-11e1c9ac1b6
Context: The agnostic does not simply say, “I do not know.” He goes another step, and he says, with great emphasis, that you do not know. He insists that you are trading on the ignorance of others, and on the fear of others. He is not satisfied with saying that you do not know,—he demonstrates that you do not know, and he drives you from the field of fact—he drives you from the realm of reason—he drives you from the light, into the darkness of conjecture—into the world of dreams and shadows, and he compels you to say, at last, that your faith has no foundation in fact.
Source: (1776), Book IV, Chapter V, Digression, p. 572.
Your Job-Hunt Ltd – Advice from an Award-Winning Asian Headhunter (2003), Successful Recruitment in a Week (2012) https://books.google.ae/books?idp24GkAsgjGEC&printsecfrontcover&dqnigel+cumberland&hlen&saX&ved0ahUKEwjF75Xw0IHNAhULLcAKHazACBMQ6AEIGjAA#vonepage&qnigel%20cumberland&ffalse, 100 Things Successful People Do: Little Exercises for Successful Living (2016) https://books.google.ae/books?idnu0lCwAAQBAJ&dqnigel+cumberland&hlen&saX&ved0ahUKEwjF75Xw0IHNAhULLcAKHazACBMQ6AEIMjAE
Senator McCain's announcement speech for his 2008 presidential bid https://en.wikipedia.org/wiki/John_McCain_presidential_campaign,_2008 (25 April 2007)
Full text of the speech can be found here on The New York Times http://www.nytimes.com/2007/04/25/us/politics/26mccain_text.html
2000s, 2007
As quoted in Ramakrishna : Prophet of New India (1948) by Swami Nikhilananda, p. 77
Context: In the Kaliyuga, man, being totally dependent on food for life, cannot altogether shake off the idea that he is the body. In this state of mind it is not proper for him to say: "I am He". When a man does all sorts of worldly things, he should not say, "I am Brahman". Those who cannot give up attachment to worldly things, and who find no means to shake off the feeling of "I", should rather cherish the idea, "I am God's servant; I am His devotee."