"Before software can be reusable it first has to be usable."
Ralph Johnson

"Beware of bugs in the above code; I have only proved it correct, not tried it."
Donald Knuth

"bug, n: An elusive creature living in a program that makes it incorrect. The activity of "debugging", or removing bugs from a program, ends when people get tired of doing it, not when the bugs are removed."
"Datamation", January 15, 1984

"C is quirky, flawed, and an enormous success."
Dennis M. Ritchie

"Coding styles are like assholes, everyone has one and no one likes anyone elses."
Eric Warmenhoven

"Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it."
Brian W. Kernighan

"Documentation is like sex: when it is good, it is very, very good; and when it is bad, it is better than nothing."
Dick Brandon

"Don't get suckered in by the comments— they can be terribly misleading. Debug only code."
Dave Storer

"He who hasn't hacked assembly language as a youth has no heart. He who does as an adult has no brain."
John Moore