I believe there is one God who sent down messengers, Muhammad peace be on him was Gods last prophet,what messengers said we're divine, there is no room for further search, messengers were also the best philosophers,they preached Gods command.This universe is built by God and it's perfectly built,the philosophy ends up here,there are many moral values which carries with them bliss and future wellbeing of this civilization and the future one.
Yes good life and peaceful world can be made by having belief of only one God.
The future of this world is in the hands of those who believe ind universe created by God