A Beautiful Mind

Today, I was in a clock shop with numbers displayed everywhere.
A couple of days ago, I started reading A Beautiful Mind, a biography of John Nash.
Numbers are simple and yet, complicated.

From Wikipedia:
"His work in mathematics includes the Nash embedding theorem, which shows that any abstract Riemannian manifold can be isometrically realized as a submanifold of Euclidean space. He also made significant contributions to the theory of nonlinear parabolic partial differential equations and to singularity theory."