Testing proves a programmer’s failure. Debugging is the programmer’s vindication.

A design remedy that prevents bugs is always preferable to a test method that discovers them.

A test that reveals a bug has succeeded, not failed.

A good threat is worth a thousand tests.

More than the act of testing, the act of designing tests is one of the best bug preventers known.

Second law: The complexity barrier. Software complexity (and therefore that of bugs) grows to the limits of our ability to manage that complexity.

First law: The pesticide paradox. Every method you use to prevent or find bugs leaves a residue of subtler bugs against which those methods are ineffective.

One of the saddest sights to me has always been a human at a keyboard doing something by hand that could be automated. It's sad but hilarious.

If you can't test it, don't build it. If you don't test it, rip it out.

Software never was perfect and won't get perfect. But is that a license to create garbage? The missing ingredient is our reluctance to quantify quality.

If the objective of testing were to prove that a program is free of bugs, then not only would testing be practically impossible, but it would also be theoretically impossible.

Abundant evidence exists to prove that we are continually creating excuses to explain why we do not reach our goals.

Is it better to have something perfect that doesn't fit or something imperfect that fits?

Thus the negative perception is the triumph of consciousness.

Whether we will philosophize or we won't philosophize, we must philosophize.

Even in moments of tranquility, Murray Walker sounds like a man whose trousers are on fire.

Getting the Oscar had the biggest impression on me.

If we cannot live so as to be happy, let us at least live so as to deserve it.

Anybody who is thinking of applying for the Scotland job in the next eight or nine years should go get themselves checked out by about 15 psychiatrists.

If you want to empower anyone else in your life, you need to start living the most empowered version of yourself first!

Some maladies are rich and precious and only to be acquired by the right of inheritance or purchased with gold.