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Pure mathematics is the subject in which we do not know what we are talking about, nor whether what we are saying is true. -Betrand Russell [quoted from GP 52f] As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality. - Albert Einstein (1879-1955) [quoted from QP] In so far as a scientific statement speaks about reality, it must be falsifiable: and in so far as it is not falsifiable, it does not speak about reality. - Karl Popper (The Logic of Scientific Discovery) [quoted from EL] A geometrical theory in physical interpretation can never be validated with mathematical certainty ... ; like any other theory of empirical science, it can acquire only a more or less high degree of confirmation. - C G Hempel [quoted from J H Fetzer: Program Verifaction] |
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Reality is merely an illusion, albeit a very persistent one. - Albert Einstein (1879-1955) [quoted from QP] Reality is that which, when you stop believing in it, doesn't go away. - Philip K Dick (1928-1982) [quoted from QP] Reality is the leading cause of stress amongst those in touch with it. - Jane Wagner (and Lily Tomlin) [quoted from QP] So mancher Gedanke fällt um wie ein Leichnam wenn er mit dem Leben in Berührung kommt. - Christian Morgenstern [quoted from Ausgewählte Aphorismen] Das einzige was niemand glauben will, ist die Wahrheit. - G B Shaw [quoted from Ausgewählte Aphorismen] |
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Die Zeit kommt aus der Zukunft, die nicht existiert, in die Gegenwart, die keine Dauer hat, und geht in die Vergangenheit, die aufgehört hat zu existieren. - Augustinus [quoted from Ausgewählte Aphorismen] Ich denke niemals an die Zukunft. Sie kommt früh genug. - Albert Einstein (1879-1955) [quoted from Ausgewählte Aphorismen] |
I don't know why we are here,
but I'm pretty sure that it is not in order to enjoy ourselves.
- Ludwig Wittgenstein [quoted from QP]
Gedächtnis nennt man die Fähigkeit,
sich das zu merken, was man vergessen möchte.
- Daniel Gelin [quoted from Ausgewählte Aphorismen]
Interestingly, according to modern astronomers, space is finite.
This is a very comforting thought--
particularly for people who can never remember where they have left things.
- Woody Allen (1935 - ) [quoted from QP]
Every man, wherever he goes, is encompassed
by a cloud of comforting convictions,
which move with him like flies on a summer day.
- Bertrand Russell (1872 - 1970, Sceptical Essays (1928), "Dreams and Facts") [quoted from QP]
Neurotics build castles in the air,
psychotics live in them.
My mother cleans them.
- Rita Rudner [quoted from QP]
There is a theory which states that if ever anybody discovers exactly what the Universe is for and why it is here,
it will instantly disappear and be replaced by something even more bizarre and inexplicable.
There is another theory which states that this has already happened.
- Douglas Adams (1952 - 2001) [quoted from QP]
In the beginning the Universe was created.
This has made a lot of people very angry and been widely regarded as a bad move.
- Douglas Adams (1952 - 2001) [quoted from QP]
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The world revolves around objects, yet, not everything in the world is an object; there are also quantities and, of course, relationships. - Bruno et.al., 1993 |
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A: Smith, how you've changed. You used to be tall and now you are short. You used to be thin and now you are fat. You used to have blue eyes and now you have brown eyes. B: But my name isn't Smith. A: Oh, so you've changed your name too. - Peter Wegner on `identity' in object-oriented programming (1990) [CP/OOP] |
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It is important to find a woman that cooks and cleans. It is important to find a woman that makes good money. It is important to find a woman that likes to have sex.
And most important... |
Everything should be made as simple as possible, but not simpler.
- Albert Einstein (Reader's Digest, Oct 1977) [quoted from EL]
Science may be described as the art of systematic over-simplification.
- Karl Popper (The Observer, August 1982) [quoted from EL]
Form must follow function.
- Le Corbusier [quoted from TC++PL3]
Abstraction is selective ignorance.
- Andrew Koenig [quoted from TC++PL3]
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Does it not require some pains and skill to form the general idea of a triangle, ... for it must be neither Oblique, nor Rectangle, neither Equilateral, Equicural, nor Scalenon; but all and none of these at once. In effect it is something imperfect, that cannot exist; an Idea wherein some parts of several different and inconsistent Ideas are put together. - John Locke (1632-1704) [quoted from MTRW] |
To iterate is human,
to recurse divine.
- L Peter Deutsch [quoted from TC++PL3]
Types arise naturally, even starting from untyped universes.
- Cardelli and Wegner [UTDAP]
Those types are not "abstract";
they are as real as int and float.
- Doug McIlroy [quoted from TC++PL3]
Ask not what you can do to your data structures,
but ask what your data structures can do for you.
- Tim Budd [Leda:12]
The reason that data structures and algorithms
can work together seamlessly is ... that they
do not know anything about each other.
- Alex Stepanov [quoted from TC++PL3]
Premature optimization is the root of all evil.
- D Knuth [quoted from TC++PL3]
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The big lie of object-oriented programming is that objects provide encapsulation. - John Hogg (1991)
A single object may be encapsulated, |
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It is possible by ingenuity and at the expense of clarity ... [to do almost anything in any programming language]. However, the fact that it is possible to push a pea up a mountain with you nose does not mean that this is a sensible way of getting it there. - Christopher Strachey (NATO Summer School in Programming) [quote from ACG:11] |
To err is human, but to really foul things up requires a computer.
- Farmers' Almanac, 1978 [quoted from QP]
Imagine if every Thursday your shoes exploded if you tied them the usual way.
This happens to us all the time with computers, and nobody thinks of complaining.
- Jeff Raskin, interviewed in Doctor Dobb's Journal [quoted from QP]
If the automobile had followed the same development cycle as the computer,
a Rolls-Royce would today cost $100, get a million miles per gallon,
and explode once a year, killing everyone inside.
- Robert X Cringely, InfoWorld magazine [quoted from QP]