Quotable Mathematics

"Everyone knows what a curve is, until he has studied enough mathematics to become confused through the countless number of possible ex...

"Differentiability of a function can be established by examining the behavior of the function in the immediate neighborhood of a single...

"Logic sometimes makes monsters. For half a century we have seen a mass of bizarre functions which appear to be forced to resemble as l...

"In mathematics, logic, linguistics, and other abstract disciplines, the systems are not assigned to objects. They are defined by an en...

"Things are called continuous when the touching limits of each become one and the same and are contained in each other. Continuity is i...