“Principles for the Development of a Complete Mind: Study the science of art. Study the art of science. Develop your senses- especially learn how to see. Realize that everything connects to everything else.”
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Leonardo Da Vinci 363
Italian Renaissance polymath 1452–1519Related quotes

“Science is what we understand well enough to explain to a computer. Art is everything else we do.”
Foreword to the book A=B http://www.cis.upenn.edu/~wilf/AeqB.html (1996)
Source: Things a Computer Scientist Rarely Talks About
As quoted in "James Clavell, Best-Selling Storyteller of Far Eastern Epics, Is Dead at 69" by William Grimes in The New York Times (8 September 1994) http://query.nytimes.com/gst/fullpage.html?res=9D03E4D61138F93BA3575AC0A962958260&sec=&spon=&pagewanted=all
Context: Changi became my university instead of my prison. … Among the inmates there were experts in all walks of life — the high and the low roads. I studied and absorbed everything I could from physics to counterfeiting, but most of all I learned the art of surviving.

Source: https://www.goodreads.com/author/quotes/14108295.alexis_karpouzos?page=2

Letter to Abigail Adams (12 May 1780)
1780s
Context: The science of government it is my duty to study, more than all other sciences; the arts of legislation and administration and negotiation ought to take the place of, indeed exclude, in a manner, all other arts. I must study politics and war, that our sons may have liberty to study mathematics and philosophy. Our sons ought to study mathematics and philosophy, geography, natural history and naval architecture, navigation, commerce and agriculture in order to give their children a right to study painting, poetry, music, architecture, statuary, tapestry and porcelain.

“Realize that everything connects to everything else.”
Variant: Learn how to see. Realize that everything connects to everything else.

Source: Introduction to semantics, 1962, p. 4

Source: 1950s, The development of operations research as a science, 1956, p. 265, the lead paragraph ; Cited in: Joe Kelly (1969) Organizational behaviour. p. 26.