Walking on water and developing software from a specification are easy if both are frozen.

"Edward V Berard"

A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools......

T he major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair.

"Douglas Adams"

The fish trap exists because of the fish. Once you've gotten the fish you can forget the trap. The rabbit snare exists because of the rabbit. Once you've gotten the rabbit, you can forget the snare. Words exist because of meaning. Once you've gotten the meaning, you can forget the words. Where can I find the man who has forgotten words so I can talk with him?

"Zhuangzi"

Tiger got to hunt, bird got to fly;
Man got to sit and wonder 'why, why, why?'
Tiger got to sleep, bird got to land;
Man got to tell himself he understand.

"Kurt Vonnegut"