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. hardyThe mathematicians know a great deal about very little and the physicists very little about a great deal.
stanislaw ulamFirst rate mathematicians choose first rate people, but second rate mathematicians choose third rate people.
andré weilScientific 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 gardnerAll musicians are subconsciously mathematicians.
thelonious monkIn their field they [mathematicians] do what we ought to be doing in ours. Therein lies the significant lesson ... of their existence. They are an analogy for the intellectual of the future.
robert musilInstruction 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.
[His work is addressed]... not to the learned and experienced mathematicians who are already, or should be, better acquainted with them... [and most of whom] have studied mechanics more as a subject of curiosity and a hobby, than with any view of service to the public. The people we had in mind were rather the mechanic, handicraftsman and the like, who, without education or knowledge of foreign languages have no access to many sources of information...
Math is perfect (in principle), but mathematicians are not (because they are humans), hence the mathematics that (human) mathematicians do is influenced by the weltanschauung of the people around them.
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 Galileimathematicians seem to have no difficulty in creating new concepts faster than the old ones become well understood.
mathematicians believed that prediction was just a function of keeping track of things. If you knew enough, you could predict anything… Chaos theory throws it right out the window because in fact there are great categories of phenomena that are inherently unpredictable.