Bad habits aren't flung out the window. They're coaxed down the stairs one step at a time.

A man may have no bad habits and have worse

Old habits can't be thrown out the upstairs window. They have to be coaxed down the stairs one step at a time.

Nothing so needs reforming as other people's habits.

If I cannot smoke cigars in Heaven, I shall not go

To eat is human, to digest, divine