Well put Mr. Percival, well put!

Think before you code: "In a recent article about Y Combinator, Paul Graham pointed to the fact that two people had written 40,000 lines of code in three months as a sign that they were doing something right; he went on to point out that 'you never see that in a big company'. To me this number is, if anything, a sign that things are going horribly wrong: Anyone who is consistenly writing more than 5,000 lines of code per month is either (a) not working on a problem which is difficult enough to be interesting (any half-competent programmer can write binary searches, quicksorts, and depth-first graph traversals at a rate of thousands of lines of code per day); (b) utterly incompetent (we've all seen people who can replace ten lines of working code with a thousand lines of buggy code); or (c) going to have to throw out and rewrite most of their code once they realize that it doesn't solve the problem which they needed to solve -- with this realization most likely coming after their first release.
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"Write code" is definitely important. "Release early", too. But more important than either of those is "Understand the problem you're trying to solve"; and most important of all: "Do it right".
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