Programmer time is expensive; conserve it in preference to machine time

Grovelling is not a substitute for doing your homework.

Thompson and Ritchie were among the first to realize that hardware and compiler technology had become good enough that an entire operating system could be written in C, and by 1978 the whole environment had been successfully ported to several machines of different types.

You cannot motivate the best people with money. Money is just a way to keep score. The best people in any field are motivated by passion.

Prototype, then polish. Get it working before you optimize it

I believe, but cannot prove, that global “AIDS” is a whole cluster of unrelated diseases all of which have been swept under a single rug for essentially political reasons, and that the identification of HIV as the sole pathogen is likely to go down as one of the most colossal blunders in the history of medicine.

Given enough eyeballs, all bugs are shallow (e.g., given a large enough beta-tester and co-developer base, almost every problem will be characterized quickly and the fix obvious to someone).