Since the mathematicians have invaded the theory of relativity, I do not understand it myself anymore.

There have been only three epochmaking mathematicians: Archimedes, Newton, and Eisenstein.
ferdinand eisensteinGrattanGuinness has achieved a synthesis here of remarkable historical and mathematical scope and sensitivity. His book is a 'must read' for historians of science and mathematics, as well as mathematicians.
ivor grattanguinnessI am obliged to interpolate some remarks on a very difficult subject: proof and its importance in mathematics. All physicists, and a good many quite respectable mathematicians, are contemptuous about proof. I have heard Professor Eddington, for example, maintain that proof, as pure mathematicians understand it, is really quite uninteresting and unimportant, and that no one who is really certain that he has found something good should waste his time looking for proof.
g. h. hardyTo illustrate to what extent Hardy and Littlewood in the course of the years came to be considered as the leaders of recent English mathematical research, I may report what an excellent colleague once jokingly said: 'Nowadays, there are only three really great English mathematicians: Hardy, Littlewood, and HardyLittlewood.'
g. h. hardy... mathematicians progress only by doubt, through humble and constant attempts to impinge on the immense domain of the unknown.
The mathematicians know a great deal about very little and the physicists very little about a great deal.
stanislaw ulamScientific discovery consists in the interpretation for our own convenience of a system of existence which has been made with no eye to our convenience at all.One of the chief duties of a mathematician in acting as an advisor to scientists is to discourage them from expecting too much of mathematicians.
Norbert WienerIt is almost as hard to define mathematics as it is to define economics, and one is tempted to fall back on the famous old definition attributed to Jacob Viner, “Economics is what economists do,” and say that mathematics is what mathematicians do. A large part of mathematics deals with the formal relations of quantities or numbers.
kenneth bouldingThe physicists say that I am a mathematician, and the mathematicians say that I am a physicist. I am a completely isolated man and though everybody knows me, there are very few people who really know me.
Albert EinsteinBiographical history, as taught in our public schools, is still largely a history of boneheads: ridiculous kings and queens, paranoid political leaders, compulsive voyagers, ignorant generals the flotsam and jetsam of historical currents. The men who radically altered history, the great scientists and mathematicians, are seldom mentioned, if at all.
martin gardnerShould I not be proud, when for twenty years I have had to admit to myself that the great Newton and all the mathematicians and noble calculators along with him were involved in a decisive error with respect to the doctrine of color, and that I among millions was the only one who knew what was right in this great subject of nature?
The whole thing that makes a mathematician’s life worthwhile is that he gets the grudging admiration of three or four colleagues.
donald knuthCourage is not a quality one normally associates with mathematicians. Yet it should apply to people who work in their attics in secret for seven years without cease on a problem that has eluded the greatest mathematical minds since first proposed in 1637.
charles krauthammerInstruction tables will have to be made up by mathematicians with computing experience and perhaps a certain puzzlesolving ability. There need be no real danger of it ever becoming a drudge, for any processes that are quite mechanical may be turned over to the machine itself.
alan turingAny false value is gonna be fairly boring in Perl, mathematicians notwithstanding.
larry wallA great deal of study has been directed to denning 'best decisions,' particularly since the pioneering work of mathematical statisticians (such as Wald), of mathematicians (such as von Neumann), of economists (such as Arrow )... The main effect of this development on the practice of OR has been the growing realization that there are decision objectives other than maximizing expected return and minimizing maximum loss. That is, in many practical situations there are criteria of optimality that are more appropriate than these two mentioned.
I have expos'd myself to the enmity of all metaphysicians, logicians, mathematicians, and even theologians; and can I wonder at the insults I must suffer?
Direct application of the theory of games to the solution of real problems has been rare, and its chief uses have been to offer some insight and understanding into the problems of competition (without actually solving them), and to provide mathematicians with new fields to conquer. Many important real problems involve more than two opponents, are not zerosum, and exceed the bounds of the most developed versions of game theory.
One does not read in the Gospel that the Lord said: "I will send you the Paraclete who will teach you about the course of the sun and moon ." For He willed to make them Christians, not mathematicians.
Prolonged contact with the computer turns mathematicians into clerks and vice versa.
What has philosophy got to do with measuring anything? It's the mathematicians you have to trust, and they measure the skies like we measure a field.
Galileo GalileiTrying to solve realworld problems, researchers often discover that the tools they need were developed years, decades or even centuries earlier by mathematicians with no prospect of, or care for, applicability.