Perfect Software and other illusions about testing

is the title of an excellent book by Jerry Weinberg. As usual I'm going to quote from a few pages:

Information is neutral but people's reactions to information are rarely neutral.

I'm not in the proof business; I'm in the evidence and inference business.

A process description is just that, a description ... not of what has actually been done.

To qualify as a test, an action has to seek information that will influence an action.

Fixing under pressure tends to raise the fault-feedback-ratio.

Anyone who makes promises about the future must be some sort of devil.

Errors are made, not born.

In a moment of weakness it is difficult to resist infantile suggestions.

Good tools amplify effectiveness; if your effectiveness is negative, adding tools will amplify only the negativity.