Writing program code is a good way of debugging your thinking
All models are wrong but some are useful.
Let no one else's work evade your eyes,
Remember why the good Lord made your eyes,
So don't shade your eyes,
But plagiarize, plagiarize, plagiarize...
Only be sure always to call it please research.
-Tom Lehrer in The Lobchevsky Song
I have left out many of the things which could have been added so as to make the practice of the analysis more easy. I can assure you, nevertheless, that I have ommited all that quite deliberately [since] I felt sure that some people who boast that they know everything would not miss the chance of saying that they knew already what I had written, if I had made myself easily intelligible to them.
-Rene Descartes (as quoted by Hersh, Math. Intell. 1997)
In theory there is little difference between theory and practice.
In practice there is.
-sounds like Yogi Berra, but ...
It is easy to lie with statistics, but it is easier to lie without it.
Give me four parameters and I can fit an elephant. Give me five and I can make it wave its trunk.
- hmmm, well, Fermi says it was von Neumann, but LeCam says it was Bertrand.
The empiricist ... thinks he believes only what he sees, but he is much better at believing than at seeing.
-Santayana, Skepticism and Animal Faith (acc. to Anderson, J. of Recreational Math. 1999)
The government [is] extremely fond of amassing great quantities of statistics. These are raised to the nth degree, the cube roots are extracted, and the results are arranged into elaborate and impressive displays. What must be kept ever in mind, however, is that in every case, the figures are first put down by a village watchman, and he puts down anything he damn well pleases.
-Sir Josiah Stamp
In an examination those who do not wish to know ask questions of those who cannot tell.
-Sir Walter Alexander Raleigh, in Some Thoughts on Examinations
I know no method to secure the repeal of bad or obnoxious laws so effective as their stringent execution
- Ulysses S. Grant