Lesmoir-Gordon, Nigel (2000). Introducing Fractal Geometry. Icon Books. ISBN978-1-84046-123-7. «...brought home again to Benoit [Mandelbrot] that there was a 'mathematics of the eye', that visualization of a problem was as valid a method as any for finding a solution. Amazingly, he found himself alone with this conjecture. The teaching of mathematics in France was dominated by a handful of dogmatic mathematicians hiding behind the pseudonym 'Bourbaki'...»
«A Note on the History of Fractals». Արխիվացված է օրիգինալից 2009 թ․ փետրվարի 15-ին. «Mandelbrot, working at the IBM Research Laboratory, did some computer simulations for these sets on the reasonable assumption that, if you wanted to prove something, it might be helpful to know the answer ahead of time.»
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Buss, Samuel R. (1998), «An introduction to proof theory», in Buss, Samuel R. (ed.), Handbook of Proof Theory, Studies in Logic and the Foundations of Mathematics, vol. 137, Elsevier, էջեր 1–78, ISBN978-0-08-053318-6. See in particular p. 3: "The study of Proof Theory is traditionally motivated by the problem of formalizing mathematical proofs; the original formulation of first-order logic by Frege [1879] was the first successful step in this direction."
"Whether constant π (i.e., pi) is normal is a confusing problem without any strict theoretical demonstration except for some statistical proof"" (Derogatory use.)[2]
Quine, Willard Van Orman (1961). «Two Dogmas of Empiricism»(PDF). Universität Zürich — Theologische Fakultät. էջ 12. Վերցված է 2019 թ․ հոկտեմբերի 20-ին.
«A Note on the History of Fractals». Արխիվացված է օրիգինալից 2009 թ․ փետրվարի 15-ին. «Mandelbrot, working at the IBM Research Laboratory, did some computer simulations for these sets on the reasonable assumption that, if you wanted to prove something, it might be helpful to know the answer ahead of time.»
