A great deal more is known than has been proved.
There is no more common error than to assume that, because prolonged and accurate mathematical calculations have been made, the application of the result to some fact of nature is absolutely certain.
The electron is a theory we use; it is so useful in understanding the way nature works that we can almost call it real.
The physicist, in his study of natural phenomena, has two methods of making progress: (1) the method of experiment and observation, and (2) the method of mathematical reasoning. The former is just the collection of selected data; the latter enables one to infer results about experiments that have not been performed. There is no logical reason why the second method should be possible at all, but one has found in practice that it does work and meets with reasonable success.
Although this may seem a paradox, all exact science is based on the idea of approximation. If a man tells you he knows a thing exactly, then you can be safe in inferring that you are speaking to an inexact man.
I don't know if the police of naming statements would agree with this.
The polynomial xn−1 is a force of nature.
How are the germs made into a ring? By adding and multiplying.
Quadratic reciprocity is the song of love in the land of prime numbers.
The prime ideal is a princess of the world of ideals. Her father is the prince 'Point' in the world of geometry. Her mother is the princess 'Prime Numbers' in the world of numbers. She inherits the purity from her parents.
I'm a young guy called 'commutative ring', but I was originally 'the ring of continuous functions on a compact Hausdorff space'. Now I am an algebraic object, so I must say goodbye to my home village, the space, but I will always keep it in my heart as a set of maximal ideals.
It never happens that, when we go home and open the refrigerator, we see all infinitely many prime numbers there.
If we drop money, we are usually very sad if the money is big. But for example, if we drop 310 dollars, we can relax, because this is very small in the 3-adics.
Why do I act as I do? To tell you the truth, I have absolutely no idea why. It is simply my nature to act as I act, and that's all I can say.
Sticks and stones may break my bones, but words can make me think I deserved it.
It is not only the prisoners who grow coarse and hardened from corporal punishment, but those as well who perpetrate the act or are present to witness it.
The revolutionary idea that defines the boundary between modern times and the past is the mastery of risk: the notion that the future is more than a whim of the gods and that men and women are not passive before nature.
Upon the whole, I am inclined to think that the far greater part, if not all, of those difficulties which have hitherto amused philosophers, and blocked up the way to knowledge, are entirely owing to our selves. That we have first raised a dust, and then complain, we cannot see.
Consider the concepts referred to in the words 'where', 'when', 'why', 'being', to the elucidation of which innumerable volumes of philosophy have been devoted. We fare no better in our speculations than a fish which should strive to become clear as to what is water.
I was not; I have been; I am not; I do not mind.
Apart from two periods of intense study, of music between the ages of 12 and 14 and of mathematics between the ages of 14 and 16, I coasted, daydreaming, through most of my school years.
Mathematics is about making up rules and seeing what happens.
Being a mathematician is a bit like being a manic depressive: you spend your life alternating between giddy elation and black despair.
You burros have calculus in your blood.
Detest it [a certain difficult mathematics problem] just as much as lewd intercourse; it can deprive you of all your leisure, your health, your rest, and the whole happiness of your life.
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