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. 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 gardnerThe 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 krauthammerAll musicians are subconsciously mathematicians.
thelonious monkInstruction 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 wallDirect 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.
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.