From josh’s blog:

7 Sep ’12 11:01:58 AM

A teacher who feels called to a vocation will feel all the more unhappy at inviting any student freely to leave what education is to be had rather than take it; like a priest who says, sorry, my child, if you can be saved, it’s not by me.

Indeed.  Inviting someone to leave is not always the same as wanting them to go.