Free Will and Grace-reflections after a talk

Last night, February 7th 2013,  we attended Dr.William Marshner's talk on "Grace and Free Will " at the Institute of Catholic Culture. He explained the very logical and philosophical presentation on the basis of St.Augustine's writings /teachings and analyzed (among other things) John Calvin's Predestination Theories...It was mind blowing. I had thought Islam only , excludes Free Will to the extend that everything is " known or written" by God and nothing can change it .... no effort on human side can change the "God written" destiny.......In fact Calvin had some similar ideas...very interesting I thought... John Calvin’s interpretation of predestination states that not only does God govern all events, but he also has already determined who will be saved, and who will be damned. Dr, Marshner, using St.Augustine's writings explained the difference and argued how Free Will makes the destiny happen. God KNOWS (there is no time in God) what will happen to all, but he always makes Grace and other means available to people , so whoever engages his action and receives the Grace available and furthermore let Grace work in them, in few words let God be the center and in charge of their lives, they are then the governed and the saved by God... . So while God knows our destiny, we DON't. So, why then assume the worst while we can WILL and Act upon it (wanting to happen and will it) and make room for Grace to dwell in us... ? See the difference ....? OUR OWN CHOOSING makes a difference ...... To those who reject God's Available Grace and fall into despair, by not engaging the Free Will to accept Grace well.....God may then say: "be my guest...."
There is Mercy but it also that goes hand in hand with Justice...

Take care friends, and dont waste time worrying, Let God lead you....