Authors:

Never lie to a child about doctors or medicine or anything else; but if you feel, as some people seem to feel, that life without lying is an impossibility, at least don't lie about the amount of pain likely to result from a surgical procedure, or about the taste of some medicine. If you know that something to be done will hurt, say so; if a mixture to be swallowed is unpleasant, say so. If you deceive a child once in such matters, do not imagine that it will trust you again. You do not deserve trust, and you will not get it.

Lyman Abbott (1896). “The House and Home: A Practical Book”
Never lie to a child about doctors or medicine or anything else; but if you feel, as some people seem to feel, that life without lying is an impossibility, at least don't lie about the amount of pain likely to result