
> 
> Mathematics is not about numbers, equations, computations, or
>  algorithms: it is about understanding.
> 
> 
> 


Is this from Thurston? If yes, where and when it has been said. I've checked "ON PROOF AND PROGRESS IN MATHEMATICS" and it is not there. 



William Thurston's quote?
This quote is from the book "Mathematicians: An Outer View of the Inner World" (Mariana Cook and Robert Clifford Gunning, Princeton University Press, 2009).


<https://www.jstor.org/stable/j.ctt2jc8h2>


"Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding. I’ve loved mathematics all my life, although I often doubted that mathematics would turn out to be my life’s..."


