May 25
The coolest thing ever to me is that basically all the laws of physics (Maxwell's equations, Einstein's equations for general relativity, Schrödinger's equation, the heat equation..) are differential equations. You would need calculus to even state them properly. It has also been argued that all of these laws can be derived from one action principle to another.
Simply to say, the fact that nature "speaks the language of calculus" is not only an example of the inherent mathematical beauty of calculus, but it’s a beautiful fact in its own right. So cool.
