In particular, introducing new numbers, math has the sole obligation to give the definitions of them, by means of which will be given a definable and, if circumstances permit, such […]
Roger Bacon (1214-1294)
The things of this world can not be known without the knowledge of mathematics.
Aner Shalev (1958-)
I like […] freedom of mathematics. If physical or chemical studies must describe the real world. But in mathematics you can build your structures. You can walk in worlds created […]