- If there is a possibility of several things going wrong, the one that will cause the most damage will be the first one to go wrong.
- If anything just cannot go wrong, it will anyway.
- If you perceive that there are four possible ways in which something can go wrong, and circumvent these, then a fifth way, unprepared for, will promptly develop.
- Left to themselves, things tend to go from bad to worse.
- If everything seems to be going well, you have obviously overlooked something.
- Nature always sides with the hidden flaw.
- Any inanimate object, regardless of its position, configuration or purpose, may be expected to perform at any time in a totally unexpected manner for reasons that are either entirely obscure or else completely mysterious.
