Logic is a systematic method of coming to the wrong conclusion with confidence.

If builders built buildings the way programmers wrote programs, then the first woodpecker that came along would destroy civilization.

An expert is one who knows more and more about less and less until he knows absolutely everything about nothing.
The attention span of a computer is only as long as it electrical cord.
Tell a man there are 300 billion stars in the universe and he'll believe you. Tell him a bench has wet paint on it and he'll have to touch to be sure.
Any attempt to print Murphy's laws will jam the printer.
All great discoveries are made by mistake.

When in doubt, mumble.
When in trouble, delegate.
When in charge, ponder.

Nothing is as easy as it looks.

If you perceive that there are four possible ways in which a procedure can go wrong, and circumvent these, then a fifth way, unprepared for, will promptly develop.

Every solution breeds new problems..
If there is a worse time for something to go wrong, it will happen then.

Two wrongs are only the beginning.

Left to themselves, things tend to go from bad to worse.

It is impossible to make anything foolproof because fools are so ingenious.

Any given program, when running, is obsolete.
Any given program costs more and takes longer.

Any non-trivial program contains at least one bug.