Greenspun's Tenth Rule of Programming: any sufficiently complicated C or Fortran program contains an ad hoc informally-specified bug-ridden slow implementation of half of Common Lisp.
Philip GreenspunAlthough the Buddhists will tell you that desire is the root of suffering, my personal experience leads me to point the finger at system administration.
Philip GreenspunStart by putting yourself in your users' shoes. Why are they coming to your site? If you look at most Web sites, you'd presume that the answer is "User is extremely bored and wishes to stare at a blank screen for several minutes while a flashing icon loads, then stare at the flashing icon for a few more minutes."
Philip GreenspunWe worried about competitors, but it was an unreasonable fear. As a friend once pointed out, most gunshot wounds are self-inflicted.
Philip Greenspun