User blog comment:DiegoAnime3000/Just wanted to point this out./@comment-96.254.157.84-20140801065529

JUst because he doesn't want to, doesn't mean it won't happen. As Ozpin said in the first episode, they won't be children forever and will be faced with many difficulties that comes with the life of a Hunter. He knows he can't protect them forever, so the very least is he can make sure they are ready.

As for Blake's interrogation, his last question may have hinted towards Blake's loyalty (to Beacon or the White Fang) and made it quite clear he wouldn't hold back if Blake became a threat, even if she is his student.