and i know its fucking ironic with all the stuff ISIS and violent extremist islam does in the world, but freedom of belief is pretty much entrenched in the Quran.
"There shall be no compulsion in [acceptance of] the religion. The right course has become clear from the wrong. " (2:256)
"Had your Lord willed, all those on earth would have believed altogether. Would you then (O Muhammad), compel people, so that they become believers?" (10:99)
''Had God willed, they would not have taken others besides Him in worship. And We have not made you a watcher over them nor are you set over them to dispose of their affairs." (6:107)
"Say: it is the truth from the Lord of you (all). Then whosoever will, let him believe, and whosoever will, let him disbelieve" (18:29)
"Verily, this is an admonition, therefore whosoever will, let him take a Path to His Lord" (73:19)
"Say: I ask of you no reward for this, save that whosoever will may choose a way unto his Lord." (25:57)
"Nay, but verily it (the Quran) is an Admonishment, So let whosoever will pay heed to it," (80:11-12)