Analysis of information sources in references of the Wikipedia article "Passive voice" in English language version.
There is general agreement that the passive is useful when the receiver of the action is more important than the doer[...] The passive is also useful when the doer is unknown, unimportant, or perhaps too obvious to be worth mentioning.
All good writers use the passive voice.
All good writers use the passive voice.
All good writers use the passive voice.