Tertullian

I was just watching a program about Tertullian. He gave us the famous quote, "The blood of the martyrs is the seed of the Church," and  is considered to be the founder of Western theology. He was highly educated, brilliant and a prolific writer. I've heard his name and read passing references to him over the years but  I never looked closely at him.  When I got around to studying the Church Fathers something jumped out at me. Why wasn't he St. Tertullian? He was not cannonized because in his middle age he completely blew it. He fell into the thrall of a heresy called Montanism. Schism being what it is, he eventually got tired of that and went off to something else. He died, apparently not fully reconciled with the Church. How did this happen? It's unclear but perhaps he trusted his own intellect too much. At any rate Tertullian is a good, though frightening example of how even those with a high degree of blessings can fail. You don't arrive at holiness and then coast through life. It's a fight every day.