Mathematics is not about answers, it’s about processes.Ian Stewart
In an equation, the equals sign is like a hinge on a door: the door is the whole equation, and you are free to swing it in one direction or the other.Ian Stewart
A good problem is something you don't know how to solve. That's what makes it a good puzzle, and a good mathematician is someone who likes good puzzles.Ian Stewart
The power of mathematics in any specific application depends crucially on the fit between the nature of the mathematical tools used and the nature of the system studied.Ian Stewart
We use the mathematics we know, to conjecture about the mathematics we don’t.Ian Stewart