I should share with you something I learned at the Seminary. There are two extremes, which should be avoided.
LEGALISM
and
(it's opposite) - being blown about by every wind, "the spirit", which is usually our own inclinations and/or temptations
There are two types of Catholic study we can fill our heads with:
Doctrine
Lives of the Saints
But can one substitute for the other? NO!
If we neglect Doctrine, we forget the ORDINARY: we end up all over the place, expecting exceptions and miracles constantly and everywhere, ignoring the normal, common paths.
If we neglect Lives of the Saints, we forget the EXTRAORDINARY: God is Master, makes exceptions, miracles happen, visions occur, God intervenes and raises up individuals at times for this or that mission, and in general there is the world of the extraordinary.
It seems to me that to stay balanced Catholics grounded in the truth, we need to feed our mind from BOTH these sources, so we end up neither free-wheeling PENTECOSTAL nor legalist PHARISEE. Because I can attest that I've seen both in the couple of decades since I learned this.
SUMMARY
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It's like we have to remember this phrase:
Usually life is by the book, but sometimes God gets personally involved.
If you don't read enough Doctrine (Catechism, Church definitions, rules, etc.), you need this version:
Usually life is by the book, but sometimes God gets personally involved.
But if you've read too many Lives of the Saints but not enough books on Doctrine, you need THIS version:
Usually life is by the book, but sometimes God gets personally involved.