If Arminianism does not ascribe all of salvation to God alone, then how is that in any way stemming from Augustinianism?
Arminianism does ascribe all of salvation to God alone.
That's the thing.
The difference is Arminians believe that grace can be
rejected.
If you say that the grace can be rejected, it does not mean that man gets any glory for a salvation when the grace is
not rejected.
Hence my little discussion on faith not being a work. The faith to believe is given by God, but a person can choose to rebel against what God is doing - against God's revealing of himself.
That's why Arminianism is 'semi-' Augustinian. It affirms that all of salvation is God's work, but does not affirm that the grace is irresistible.
Whether it believes salvation starts with man or not, the decisive factor and bases for salvation in Arminianism rest in man, does it not? Therefore nullifying grace altogether.
No it doesn't. It relies on faith.
The religion of fallen man is pelagianism. And any synergistic system of soteriology at that.
Agree about pelagianism.
Calvinism is not fully monergistic either. Consider how you need to be proven as elect on the bases of the quality of your fruit. In other words, Calvinism relies heavily on the outcome of your sanctification in the end. (This is another reason why I rejected it, by the way. It gave me no assurance that I was saved.)
Arminianism denies that salvation is based on the eternal decrees of God. Arminianism denies unconditional elective grace in salvation.
Careful with this. To what degree are you willing to take God's eternal decrees with regards to predestination? Will you say that God decreed when you would sin? That he actually predestined the sins in your life?
This is one of the problems with placing an emphasis on an eternal decree that is hidden in God's will (predestination). Not all Calvinists place so much emphasis on this, to their credit, because it nullifies faith for the sake of logical consistency. The reason why Classical Arminians don't agree with unconditional elective grace is because it has a tendency to downplay the role of faith and up-play the role of God's hidden, sovereign will, which is unknown to anyone. If my salvation is ultimately dependent on God's eternal decrees, I have no way of knowing whether I'm truly saved, and that doesn't work for blessed assurance.
Alas, I digress. I don't want to disparage Calvinism. The point of the post is to show the similarities and build on those. I want to show that there are a great number of similarities.
Here, the similarity is that both modes of thought agree on salvation by faith. All I say to the Calvinist is to try and make sure that they keep basing it on faith (Calvinism proper) and do not get sidetracked by predestination so much that they base salvation not on faith but in God's hidden will / decree. Faith is what brings assurance, an emphasis on predestination actually does not.
Arminianism itself stems from pelagianism regardless of how much it acknowledges Gods grace in salvation.
No it doesn't, refer back to the OP and engage with it.
If God's grace is acknowledged then it is acknowledged. This is the equivalent of accusing an apple of having orange juice inside because you don't like apples.
Because ultimately, the decisive grounds for salvation in Arminianism rest in man and not in God alone. There is no truer statement than what Martin Luther said, “ If any man doth ascribe of salvation, even the very least, to the free will of man, he knoweth nothing of grace, and he hath not learnt Jesus Christ aright”.
Luther's quote is spot on.
You seem to have missed some of the points in the OP. But I'll rephrase some of it to show the point more clearly.
Arminianism affirms that mankind does not possess free will in the things that are 'above' (just like Luther and the Reformers did) - in other words, mankind has free will in other respects, but is a slave and in bondage to sin, so there is no free will when it comes to faith and justification etc. No person comes to Christ in their own 'free will'.
So far, we are in complete agreement.
Let me quote the Augsburg Confession as Melancthon puts it so characteristically well:
"Of Free Will they teach that man's will has some liberty to choose civil righteousness, and to work things subject to reason. But it has no power, without the Holy Ghost, to work the righteousness of God, that is, spiritual righteousness; since the natural man receiveth not the things of the Spirit of God, 1 Cor. 2,14; but this righteousness is wrought in the heart when the Holy Ghost is received through the Word."
Or here's another one from the Augsburg Confession:
"It is also taught among us that man possesses some measure of free will which enables him to live an outwardly honourable life and to make choices among the things that reason comprehends. But without the grace, help and activity of the Holy Spirit man is not capable of making himself acceptable to God.”
Arminians agree with this. We would contend that the Holy Spirit does the work to free a person to make a choice. It is the Holy Spirit's work, not man's free will or some inherent goodness in man.
Arminianism knows nothing of Gods grace and has not learnt Christ aright. Augustus Toplady said it right, Arminianism is the road to Rome
This is just rhetoric.
The synod of Dort condemned Arminianism for what it was. The leaven of pelagianism
It would be awry to not acknowledge the fierce role that politics did play in the synod of Dort.