“Any sufficiently complicated C or Fortran program contains an ad hoc, informally-specified, bug-ridden, slow implementation of half of Common Lisp.”
“Any sufficiently advanced technology is indistinguishable from a completely ad hoc plot device.”
“My programs don't have bugs... they have random features.”
“Program testing can be used to show the presence of bugs, but never to show their absence!”
“When your reasons for believing something are justified ad hoc, you are left susceptible to further discoveries undermining the rationale for that belief.”
“The world contained in a seed, Determined by its program.”