I see that no one has answered any of what has placed out there. So lets move on, and see what we can find out. As we can all attest, The education one gets as a kid, stays with them. It shapes the mind, and is not easily removed. Even if something comes a long that changes one perspective, if they have a firm foundation, the core of their education would remain unchanged. By core I am talking of values, faith, understanding, and most of all personal discipline.
Seldom do people think in terms of disciplinary, as a way to understand anyone. Yet it is that vary thing that makes us who we are, and who we will be as time goes on. Personal discipline can be changed over time. As a person learns, they change. It is how ever only subtle change. The core it's self doesn't change, unless there is a major change in the mind of the person. That kind of change, is most often seen when a person has undergone mental trauma like war, the loss of a loved one, brain injury, and so on.
To look at Pauls education, we must learn a bit about his teacher. That as we know from Paul him-self was Gamaliel. Gamaliel was the grandson of Hillel. Like his granddad he believed the Torah to be the unadulterated Word of HaShem. It with this that used to upmost care in applying it's laws, and judgments. As Rabban, ( president of the Sanhedrin) Gamaliel should have prsided over the trail of Yeshua. However that was not permitted by the High Priest. As one can see in the Book of Acts,
Act 5:38 “And now I say to you, keep away from these men and let them alone; for if this plan or this work is of men, it will come to nothing;
Act 5:39 “but if it is of God, you cannot overthrow it—lest you even be found to fight against God.”
If you take time to read that whole chapter, you will better understand what he is saying. Some make the claim that Gamaliel was a follow of Yeshua, though we are never told he is. This chapter makes it clear that he seen no threat to the Jewish life by any that did follow. Yet from this man, we find Paul. A man that hunted, and persecuted any followers of the Way. Did something change in Paul, that changed how he seen the Law?
The odds are that Saul, seen the Law in much the same way as his teacher. However Saul, may have let others around him, guide his actions. After all, as a teacher of the Law himself, there was no greater honor than to sit on the Sanhedrin. At the time, the war for control was not yet over, and the Sadusees were at the top of their game. It was looking then that they may, with the help of Rome, take the show if you will. Yet even in Rome, many didn't want them in power. They liked Gamaliel, and seen him as an honest man, that would be easy to keep working with.
Knowing that Gamaliel, learned from Hillel, and would have walked the same path as his granddad, it is easy to find what he followed, and how he understood the law. Though we have little of his works to look at, the Mishnah is filled with the words of Hillel. In them we find a man that was kind, loving, and even headed. Pleasing the good of the people above his own needs. Ever working to give as light an interposition to matters of Laws as he could. With out doing harm to the traditions of the people. At the same time, Hillel also wished for a strict following of the Torah.
In closing, Paul would have followed the Spirit of the Law, and not the letter of the Law. He would have seen the Torah for what it is, a guide to keep us from sin, and to help us when dealing with others.