My quote: Mathematics is everything, the rest is just details!
Mathematicians often say that they feel as if their theorems and laws have an objective reality, like Plato's perfect realm of ideas, which they do not create or construct as much as simply discover.
A good equation should be an economical compression of truth without a symbol out of place.
Dr. Graham Farmelo
Dr. Farmelo looks for attributes like universality, simplicity, inevitability, an elemental power and ''granitic logic'' of the relationships portrayed by those symbols.
It is more important to have beauty in one's equations than to have them fit experiment.
"To speak freely of mathematics ... I call it the most beautiful profession in the world ..."
"This is often the way it is in physics. Our mistake is not that we take our theories too seriously, but that we do not take them seriously enough. It is always hard to realize that these numbers and equations we play with at our desks have something to do with the real world."
Dr. Steven Weinberg
"The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful."