Greenspun’s Tenth Rule: Any sufficiently complicated C or Fortran program contains an ad hoc informally-specified bug-ridden slow implementation of half of Common Lisp.

— Paul Graham, Hackers & Painters

There is yet one leverage point that is even higher than changing a paradigm. That is to keep oneself unattached in the arena of paradigms, to stay flexible, to realize that no paradigm is “true,” that every one, including the one that sweetly shapes your own worldview, is a tremendously limited understanding of an immense and amazing universe that is far beyond human comprehension. It is to “get” at a gut level the paradigm that there are paradigms, and to see that that itself is a paradigm, and to regard that whole realization as devastatingly funny.

— Donella H. Meadows, Thinking in Systems

Whenever someone offers a solution to a problem, critics will be quick to point out that it is not a panacea, a silver bullet, a magic bullet, or a one-size-fits-all solution; it’s just a Band-Aid or a quick technological fix that fails to get at the root causes and will blow back with side effects and unintended consequences. Of course, since nothing is a panacea and everything has side effects (you can’t do just one thing), these common tropes are little more than a refusal to entertain the possibility that anything can ever be improved.

— Steven Pinker, Enlightenment Now

Evolution is an inherently competitive process: The faster lion catches more prey than other lions, produces more offspring than other lions, and thus raises the proportion of fast lions in the next generation. This couldn’t happen if there were no competition for resources. If lion food existed in unlimited supply, the faster lions would have no advantage over the slower ones, and the next generation of lions would be, on average, no faster than the last generation. No competition, no evolution by natural selection.

— Joshua D. Greene, Moral Tribes

Failures in communication generally derive from sending a message to the wrong address. That is, your husband has an ego problem and you send a message to his mind.

— Robert Anton Wilson, Prometheus Rising