There Are No Solved Problems;

Experiment Is The Sole Source Of Truth.

Mathematics Has A Threefold Purpose. It Must Provide An Instrument For The Study Of Nature. But This Is Not All: It Has A Philosophical Purpose, And, I Daresay, An Aesthetic Purpose.

Need We Add That Mathematicians Themselves Are Not Infallible?

One Does Not Ask Whether A Scientific Theory Is True, But Only Whether It Is Convenient.

It Is By Logic We Prove. It Is By Intuition We Discover.