I firmly believe that mathematics does not exist outside of humans. It is something we, as a species, invent.

Calculus works by making visible the infinitesimally small.

A PhD in Mathematics is three years of guessing it wrong, plus one week of getting it right and writing a dissertation.

Indeed, nowadays no electrical engineer could get along without complex numbers, and neither could anyone working in aerodynamics or fluid dynamics.

We mathematicians are used to the fact that our subject is widely misunderstood, perhaps more than any other subject (except perhaps linguistics).

The whole apparatus of the calculus takes on an entirely different form when developed for the complex numbers.

Cardinal arithmetic will be quite important for us, so we spend some time on it. Since, however, it tends to be trivial, we shall not need to spend much of this time on proofs.

There can be very little of present-day science and technology that is not dependent on complex numbers in one way or another.

The linear-programming was - and is - perhaps the single most important real-life problem.

I've never met Hans Rosling, but I just knew him through his many YouTube videos, and they were absolute dynamite.

Given the brief - and generally misleading - exposure most people have to mathematics at school, raising the public awareness of mathematics will always be an uphill battle.

Literature that awakens and inflames feelings is the food of hearts.

for the people must have some complicated machinery or other, and hear its din, to satisfy that idea of government which they have.

Psychiatrists classify a person as neurotic if he suffers from his problems in living and a psychotic if he makes others suffer.

Just do the best you can. No one can do more than that.

I have something to prove, as long as I know there's something that needs improvement, and you know that everytime I move, I make a woman's movement.

When President Kennedy took office, I was in the midst of my education.

In reality, as any physicist will tell you, the physical world is made up of moving energy. All matter is energy.

For some not to be martyrs is martyrdom indeed.

Probabilities direct the conduct of the wise man.

My chief concern is to try to be an humble, earnest Christian.