I'm trying to Google and cannot find a good reference on this, please help!
It deals with objective vs subjective sanctity, how we are not all called to equal heights of sanctity objectively, but God expects us to reach our subjective heights. The example is that of a glass and a pitcher (?) and how they hold different amounts of water (grace) but are both full and complete. I know the moral of the story, I just cannot think of who used the example or the exact wording of the story. I'm thinking it was a St Teresa, probably of Avila, but maybe of the Child Jesus... Anyway, if anyone has more specific details and a link, I would be greatly obliged!