Bruce Schneier posted a link to a nice powerpoint presentation full of (sometimes snarky) maxims about the security industry. I think a lot of them are pretty universal to software development in general. You can replace security with computational math in many of the Maxims. Good examples:
Infinity Maxim: There are an unlimited number of [bugs and errors] for a given [computational math] device, system, or program, most of which will never be discovered.
Ignorance is Bliss Maxim: The confidence that people have in
[a piece of software] is inversely proportional to how much they know about it.
Rohrbach’s Maxim: No [computational math] device, system, or program
will ever be used properly (the way it was designed) all the time.
Rohrbach Was An Optimist Maxim: Few [computational math] devices,
systems, or programs will ever be used properly.