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When the weather changes and hurricanes hit, nobody believes that the laws of physics have changed. Similarly, I don't believe that when the stock market goes into terrible gyrations its rules have changed. It's the same stock market with the same mechanisms and the same people.

— Benoît Mandelbrot A Theory of Roughness (2004)

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More quotes by Benoît Mandelbrot

If you have a hammer, use it everywhere you can, but I do not claim that everything is fractal.

Unfortunately, the world has not been designed for the convenience of mathematicians.

The (Mis)Behavior of Markets (2004)

Fractal geometry is not just a chapter of mathematics, but one that helps Everyman to see the same world differently.

The Fractal Geometry of Nature (1982)

Engineering is too important to wait for science.

Contrary to popular opinion, mathematics is about simplifying life, not complicating it.

The (Mis)Behavior of Markets (2004)

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Attribution

Quote text and notes from Wikiquote: Benoît Mandelbrot (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.