“I fight, therefore I exist.”
No clear citations of this to Ben-Gurion have been located. A very early variant of this idea (which plays upon the statement of René Descartes "Cogito ergo sum" — "I think, therefore I exist") is found in Die Weimarer Reichsverfassung http://books.google.gr/books?id=VRBAAAAAYAAJ&q= (1922) by Leo Wittmayer, p. 255, a work about the Weimar Constitution, where Wittmayer speaks against the attitude, while stating it in Latin: "bello ergo sum".
Misattributed
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David Ben-Gurion 39
Israeli politician, Zionist leader, prime minister of Israel 1886–1973Related quotes
Source: The Infernal Desire Machines of Doctor Hoffman

“Existence is violent, I exist, therefore I'm violent… in that way.”

“My style is intentionally natural, I will fight till the last moment of my biological existence.”
As quoted in "Mysterious junior flyweight Ali Raymi killed in Yemen" by Ryan Songalia, in The Ring (28 May 2015) http://ringtv.craveonline.com/news/390403-mysterious-junior-flyweight-ali-raymi-killed-in-yemen
Context: My style is intentionally natural, I will fight till the last moment of my biological existence. … I don’t like discussing my pre-boxing past as I feel it will be considered inappropriately semi-legendary.

translation from original Dutch, Fons Heijnsbroek, 2018
(version in original Dutch / origineel citaat van Herman Kruyder:) ..[Ik] ga nu werken aan het schilderij 'De loopsche teef' heb daar al lang voorstudies van. Het kan eigenlijk beter 'Het gevecht daarom' heten, daar in de compositie in de achtergrond drie grote honden een grimmig gevecht leveren.
Kruyder in a letter to art-critic Albert Plasschaert, May 1934, in the RKD Archive, The Hague
dated quotes

The Daily Chronicle on the 7 March 1917 https://www.rte.ie/centuryireland/index.php/articles/george-bernard-shaw-joyriding-on-the-front.
1910s, The Technique of War (1917)