Progress in science is often built on wrong theories that are later corrected. It is better to be wrong than to be vague. Freeman Dyson
If you can't be kind, at least be vague. Judith Martin
In these last sentences I have intentionally used words of wide signification - have spoken of guidance along ordered paths. It is wisdom to be vague here, for we absolutely can not say whether or when any diversion may be introduced into the existing system of earthly forces by an external power. William Crookes
If you can't say anything nice, at least have the decency to be vague. Susan Andersen