With an absurd oversimplification, the "invention" of calculus [method in mathematics] is sometimes ascribed to two men, Newton and Leibniz.

For scholars and laymen alike it is not philosophy but active experience in mathematics itself that can alone answer the question: What is mathematics?

Calculus is the outcome of a dramatic intellectual struggle which has lasted for twenty-five hundred years.

Mathematics as an expression of the human mind reflects the active will, the contemplative reason, and the desire for aesthetic perfection.

Euler - The unsurpassed master of analytic invention.

It becomes the urgent duty of mathematicians, therefore, to meditate about the essence of mathematics, its motivations and goals and the ideas that must bind divergent interests together.

Starting in the seventeenth century, the general theory of extreme values - maxima and minima - has become one of the systematic integrating principles of science.

One is not struck by the truth until prompted quite accidentally by some external event.

Humanity has the stars in its future, and that future is too important to be lost under the burden of juvenile folly and ignorant superstition.

I'm going to lie down. Please wake me up in a couple of don't.

The Apparent is the Bridge to the Real

The artist never really has any control over the impact of his work. If he starts thinking about the impact of his work, then he becomes a lesser artist.

All together, we know for many years that terror is the most dangerous thing for local, regional and international stability.

I'm never embarassed.

When you hear a famous voice, sometimes that takes me out of the movie.

When you're a monster, you are thanked and praised for not being a monster.

The Earth with its scarred face is the symbol of the Past; the Air and Heaven, of Futurity.