what you don't know won't hurt you

what you don't know won't hurt you

Remaining ignorant or uninformed about something will allow you to not have the sense of responsibility to worry or think about it. A: "Where are you going?" B: "It's better that you stay in the dark about this. What you don't know won't hurt you."
See also: hurt, know, what

What you don't know won't hurt you.

 and What you don't know can't hurt you.
Prov. If you do not know about a problem or a misdeed, you will not be able to make yourself unhappy by worrying about it. (Often used to justify not telling someone about a problem or misdeed.) Ellen: What a beautiful diamond necklace! Thank you! But how on earth did you get the money to pay for it? Fred: What you don't know won't hurt you.
See also: hurt, know, what
References in periodicals archive ?
A lot of people run around with the idea that what you don't know won't hurt you," he said.
We've all heard the old saw: what you don't know won't hurt you.
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