C is a razor-sharp tool, with which one can create an elegant and efficient program or a bloody mess.

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.

Do what you think is interesting, do something that you think is fun and worthwhile, because otherwise you won't do it well anyway.

Controlling complexity is the essence of computer programming.

The most effective debugging tool is still careful thought, coupled with judiciously placed print statements.

90% of the functionality delivered now is better than 100% delivered never.

Don't document bad code - rewrite it.

... it is a fundamental principle of testing that you must know in advance the answer each test case is supposed to produce. If you don't, you are not testing; you are experimenting.

Believe the terrain, not the map

Each new user of a new system uncovers a new class of bugs.

If you had done something twice, you are likely to do it again.

To the victor belong the spoils of the enemy.

The darkness inside your head is something your imagination fills with stories that have nothing to do with the real darkness around you.

I'm a firm believe that a man looks his best in a suit and I feel like in the late 40's people just dressed up to do everything.

Sadly, the timing's never been right. There have been men who would have married me but I didn't feel the same, and vice versa.

It's really hard as a screenwriter, you feel like you have a vision and then you turn it over to a director and you have to let it go.

[Jack Reacher] is the longest I'd ever shot anything - and let's be clear, this is my first studio feature film - so there was a huge learning curve.

It's only the losers named Dave that think having an unusual name is bad, and who cares what they think. They're named Dave.

Speech is power: speech is to persuade, to convert, to compel. It is to bring another out of his bad sense into your good sense.

Obama believes the cops are the problem. That's why his new philosophy is to have them withdraw and refrain and not be seen because just their presence is provocative.

It's not Utopian to believe that we can create a global registry of financial assets so we know who owns what in different countries.