Parents who always whisper the word “sex” unintentionally tell their kids, “I don’t want to talk about this. Get your answers elsewhere.

Even those fortunate ones among us who get sex right don’t necessarily feel compelled to talk about it. For all they know, everybody else is having the same experience. Sex being a naturally private act,...

Far too many advocates rail against this or that sexual practice; few state clearly and explicitly what we are for.