He narrated in his verses the first disobedience of man, and invoked the Holy Spirit, who prefers before all other temples a pure and simple heart, who knows all, and who was present at the birth of time.
And then, who knows not on how much may venture the man, be he a private individual or a prince, who has succeeded in enchaining the admiration of his fellow-creatures!
That it is disgraceful to profession, who knows not?
Who knows if God will yet be pleas'd to spare, And turn away the evil that we fear?
The only thing I might say is: One does not press oneself where one isn't wanted; all the same--who knows?
In this search, who knows what he thought and what he sought?
Your son, if you have one, may be a pure altruist; who knows?
I should say that with the right kind of training you ought to go quite a long way: who knows?
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "who knows" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.