Possible Reasons for writing Part six of Discourse

Descartes declares in part six of his Discourse there are some pieces of his writing that he did not publish because he knew of a previous intellectual that published his works and got punished for not abiding what was the accepted doctrine. He declares that out of fear he will not do the same. I think that this was impressive on the part of Descartes that he could realize that society was not ready for some pieces of his work. There is a possibility that the person mentioned by Descartes was Galileo, a famous Enlightenment scientist known for his going against standard views of the church. It must be noted that Galileo was not someone denying Christianity- he did not say that he did not believe in God or Jesus or the Bible nor he did not say that the was a polytheists or an atheist. What he was opposed to was the idea upheld by the church that the Earth was the center of the world. He had observed that this was not true, and noted that Jupiter had moons that orbited it. He was declared a heretic by the church and was punished for this.
By noting this, possibly not wanting to go through the same fate, both for himself and his works. I think that this was a wise move on the part of Descartes, for he avoided the fate that befell Galileo and secured the success of his works.