Motto for a research laboratory: what we work on today, others will first think of tomorrow.
It is easier to change the specification to fit the program than vice versa.
Learning French is trivial: the word for horse is cheval, and everything else follows in the same way.
There is no such thing as a free variable.
In programming, as in everything else, to be in error is to be reborn.
Often it is the means that justify the ends: goals advance technique and technique survives even when goal structures crumble.