Testing does not improve a product; the improving is done by people fixing the bugs that testing has uncovered. - Gerald M. Weinberg

Once you eliminate your number one problem, number two gets a promotion.

Programming is generally a manual operation — we laugh when someone asks us to “say something in FORTRAN.” It is a written language, and in spite of its resemblance to other written languages, it differs from them in not having a speech system behind it. Not that written languages are simple transcriptions of speech, not at all; but a written language such as English is strongly influenced by its relationship to a spoken language. This influence is not so strong in other written languages, such as those using the Chinese writing system, but the influence — the mutual influence — always exists.

"Often when managers say, "Testing takes too long," what they should be saying is, "Fixing the bugs in the product takes too long" — a different cost category. Make sure you're accounting for effort and time under the correct cost category."