[Unam Sanctam]

"Hate the sin but love the sinner", in practice has become "accept the sin and love the sinner.

Then obviously that is not a correct interpretation of Christian teaching. Of course the teaching is difficult and people tend toward either hating or loving both sinner and sin, and certainly the line drawing is not always clear, but we must attempt to do so.

[Stubborn]

We always attempt to do so, but we are not to attempt it with our arms wrapped around them.